Happy 2 year anniversary! At the time my channel was very small and people asked why I would even make a video, so let me share the history. The topic was trending and Buzzfeed posted a reaction video that racked up 450,000 views. I thought the topic was a great way to teach some math and topology. It is now 2 years later...Buzzfeed's video has 566,000 views, my video has 800,000 views, and a video by VSauce on the topic is trending right now with over 3 million views (search for how many holes does a human have). It is often said math is not popular, but it seems math and science are Buzzworthy topics after all!
@DR.DRE774 жыл бұрын
Congrats
@94594 жыл бұрын
Congrats
@leonardlangner99494 жыл бұрын
Hey couldn’t you say that the straw has infinite holes because there are infinite circles? Continue making your videos Great job 💪🏻.
@beststar884 жыл бұрын
Can you use dark background .
@jagatiello69004 жыл бұрын
Nice one Presh, I think your graphical explanation for the 1 hole answer is easier to see than trying to explain the imposibility to (continously) shrink any closed curve over the straw's surface down to a point...and this reminded me of the poincare conjecture that perelman proved true in 2003
@Querez85046 жыл бұрын
Before I watch: one. After I watch: yes
@mr.happypineapple38466 жыл бұрын
What
@ezzbuttheyshouldntleavethe55296 жыл бұрын
I thought it would be 2
@mercury90606 жыл бұрын
M'Games U.K ßßß I always thought it was 1 because it’s one continuous hole.
@YourLocalMedic6 жыл бұрын
If you take a cylander and push the middle out you have only created a single hole.
@spicysquire6 жыл бұрын
Lol same.
@milandavid72236 жыл бұрын
I think the main confusion comes from the fact that "hole" can mean different things. If you think about a hole as an opening, it's 2 If you think about a hole as a tunnel, it's 1 If you think about a hole as a defect, it's 0. Of course mathematically there's 1 hole.
@gustavohermandio14402 жыл бұрын
gratz. you just put in words what everyone was thinking but couldn't formulate. you win
@GDPlainA2 жыл бұрын
this is the most comment of the entire century
@ThatNerdAlbert2 жыл бұрын
@@GDPlainA definitely the most comment
@hillaryclinton24152 жыл бұрын
It's just a rearranged donut....
@P4R53C52 жыл бұрын
Mathematically holes are tunnels so Yes
@facemask63763 жыл бұрын
KZfaq poll brought me here
@zoelouise17353 жыл бұрын
ME TOO
@spider_p00l953 жыл бұрын
We might be from the same Poll
@bam11293 жыл бұрын
Me too
@litete25123 жыл бұрын
Yes.
@joshuagauthier_3 жыл бұрын
I literally saw that post like 17 hours ago, and it’s been on my mind since,, so now I’m here...
@billvojtech56862 жыл бұрын
I've listened to 1:56 and have this to say: It depends on your definition of "hole" and of "straw." If you start with a rod and drill a hole through its center along its long axis, then it has one hole, (like a reusable metal drinking straw). If the straw is formed by winding a flat material in a spiral and glueing the edges where they meet, (as in a paper drinking straw), you could say it has no holes.
@BetaKeja2 жыл бұрын
I believe the mathematicians would tell you that gluing the edges together is not a continuous transformation and so you have in fact added a hole.
@sixstanger002 жыл бұрын
It doesn't matter how the "straw" is made. The end result is the same - a long tube. As a tube, it's a length of hollow material with both ends open. It has one hole.
@oldfart10792 жыл бұрын
To make a hole material has to be removed in such a fashion that material is surrounded by the voided space. A straw, tube and a hose by it's nature has a voided space. I firmly believe there is no holes in such things. Unless damage has occurred or someone willfully makes one. Drilling a hole in a rod merely speaks to the manufacturer of the straw. I don't understand the quotation marks around the words hole and straw in your comment.
@billvojtech56862 жыл бұрын
@@oldfart1079 Some people might define a "straw" as a water resistant paper tube formed by coiling and glueing paper around a rod shaped mandrel, or as an extruded plastic tube. Some may include a glass or metal tube in the definition of a straw. Some may define "hole" as an empty space formed by removing material. So if they define "straw" by the first definition and use the definition of "hole" I gave, they would say a paper straw didn't have a hole, but a stainless steel straw made on a lathe in a machine shop does.
@oldfart10792 жыл бұрын
@@billvojtech5686 yes there a multiple ways to manufacturer a straw. Nature herself can in deed manufacturer straw's and holes. Not all holes persist through an object, a cup or drinking glass are good examples of such holes commonly referred to as a "blind" hole. In manufacturing "blind" holes are used for screw fasteners and through holes are for bolt and nut fasteners.
@iHoRst-du6vv6 жыл бұрын
1903: i bet there will be flying cars in the future 2018: how many holes does a straw have?
@alternitivefacts3796 жыл бұрын
iHoRst2000 Dude lol. I need 2 vape now
@pupycron6 жыл бұрын
Humanity is evolving
@qk7x6 жыл бұрын
Not liking
@user-ny7sg9mz1v6 жыл бұрын
iHoRst2000 10000BC: What's the meaning of life? 2018AD: what's the meaning of life? This makes no sense
Here's how I explain it: A donut has one hole, right? Imagine you could stretch a donut so it's taller so that it looks like a straw. If you believe a donut has one hole and a straw has two holes, at some point when you stretch that donut, it must go from having one hole to two, which doesn't make much sense.
@MartinPHellwig6 жыл бұрын
LimeGreenTeknii My thoughts where someone along does line but I came at zero holes, since a doughnut to have a hole, it's surface being a 3d object must have at least two holes. The surface of a doughnut has no holes thus the doughnut has no holes.
@you2tooyou2too6 жыл бұрын
That seems to be his explanation above, but without food. It might help this topololgy discussion to define a solid blob (even with profound depressions but no perforations, as an object with no holes. The human body, (barring fistulas or artificial perforations) has 4 openings, all connected at the back of the throat: 2 nostrils, a mouth, and anus. How many 'holes' is that? (Ears, eye sockets, eustachian tubes, sinuses, bladders, etc are just 'depressions' that don't 'go thru'.) PS: English is used by many people with different cultures. A topologist has a useful definition for 'hole', and so does a farmer with a post hole digger, who also has a different term; 'thru-hole' (also used by machinists & commercial engineers). If either is 'wrong', it is a matter of context & code-switching. Does topology have a name for a post-hole? If not, does that make it the more limited context? Our minds are certainly flexible enough to manage multiple, sometimes contradictory definitions for many words.
@NetAndyCz6 жыл бұрын
Well I am not sure if doughnut (or circle) does have a hole since the shape is kind of defind without the hole. I would agree that the straw is just really long doughnut, but the question is whether the doughnut has hole or not and how is the hole actually defined.
@Shyhalu6 жыл бұрын
Donuts have 2 holes. Coffee Mug has 1. The issue with this problem is that no one is making a distinction between intentional holes and unintentional holes.
@rmsgrey6 жыл бұрын
+shyhalu Coffee Mugs (with handles that loop back to the body of the mug) and Doughnuts are the same (topological) shape - a ring with blobby bits. A good test for whether something has a (topological) hole is whether you could take a length of elastic, wrap it loosely around the object in some way, attach the ends of the elastic together to form a closed loop, and then be unable to separate the elastic from the object without either breaking the loop, or breaking the object. So you can form the loop so that you can't separate it from a doughnut, or the handle of a coffee mug, but no matter how you arrange the elastic, you'll always be able to get it away from a wineglass. That doesn't settle how many holes something has, just whether it has any, but it's a starting point.
@jamesnabors36432 жыл бұрын
From a manufacturing standpoint, a paper straw has zero holes. It is a rhombus spindled around a cylinder and glued into place. The rhombus remains intact, thus no holes.
@ukulelevillain41702 жыл бұрын
thats not what a hole is. a donut is made with dough and that dough remains intact, so therefor a donut doesn't have a hole?
@crinolynneendymion87552 жыл бұрын
@@ukulelevillain4170 The doughnut does indeed not have a hole. The doughnut is wrapped around a hole. Oh wait, it's not, there's no hole to wrap around. Anyway, the nut is the part of the doughnut that was the hole, but and so it's the nut is in quantum entanglement with the hole.
@ddebenedictis2 жыл бұрын
A donut has pi holes.
@jamesnabors36432 жыл бұрын
@@ukulelevillain4170 Some commercial donuts have the holes punched in them, then those are sold separately.
@SY-mn6qb2 жыл бұрын
+1 manufacturing mind
@RJTheBikeGuy2 жыл бұрын
If I have a piece of wood, and drill a hole through it, it has one hole. If I carve the outside of the wood down until it's a tube (a straw), it still only has one hole. Not too complicated.
@X22GJP2 жыл бұрын
If you're going to be clever, you need to call it a "through hole", not just a hole. Besides, you're overcomplicating it. Topologically it's just like taking that straw and morphing it into a flat disc. It'll still retain the one through hole.
@liamg17062 ай бұрын
One entry hole and one exit hole . Whats in between is a hollow.
@NA-ck6cz6 жыл бұрын
Never thought a straw could stir such a philosophical conversation
@alexandradutu11556 жыл бұрын
*touché.*
@Quirktart6 жыл бұрын
Was that a pun?
@jorge-zi2yz6 жыл бұрын
get out
@gorillaau6 жыл бұрын
Over many a Martini, I'm sure.
@TheMegaPingasMobile6 жыл бұрын
this was the last straw
@tamlynburleigh92672 жыл бұрын
My first thought was to define a hole. It must have some height, so any solid with a change in surface height downwards must be a hole. After that I struggled with all sorts of counter definitions. It was a really interesting exercise. Thanks.
@dhrracer2 жыл бұрын
We must first define what is a straw. Could the straw have a cross section structure inside to support the wall? Creating four paths for fluid to flow? Would it still be a straw? Does the word straw actually just define how an object is used? "a thin hollow tube of paper or plastic for sucking drink from a glass or bottle". This may be the common image of what we think a straw is. But how does this explain if I use a short section of a thin wall tube or pipe as a straw. My answer is there is no answer. A straw can have as many holes as anybody wants to design into it. I remember as a kid straws that had basically two in one twisted around each other. But to define a hole. Can a hole have a hole in it? Or would that just be one hole with variable dimension?
@macmcleod11882 жыл бұрын
If you had an infinitely thin plane and there was an area which lacked material where you could go from one side of the plane to the other, wouldn't that be a hole?
@jermu96072 жыл бұрын
By that logic (and dont get me wrong there is nothing wrong with that logic) holes as we usually think they are can not exist. Since you can allways travel on the edge of the "hole" and end up on otherside of that "hole" which is still on The same infinitely thin plane. This is why my reaction to this riddle was that this can not be answered before The question defines "a hole".
@Durwood2k Жыл бұрын
A hole is an exit point. A cup has one exit point, one hole, a leaky cup has two exits, so two holes. A straw? Two exits, so two holes.
@Durwood2k Жыл бұрын
@@macmcleod1188 you cant use impossible scenarios to prove a real scenario.
@notdonaldst2 жыл бұрын
Interesting. I was looking at it geometrically, without the mathematic elements. I figured a straw was basically a hollow cylinder so it was pretty much a rod with a single hole inside. I came up with the same answer by intuition instead of math.
@lonnieporter85662 жыл бұрын
Personally, I used observation to arrive at the same conclusion.
@Skywalker8510Too2 жыл бұрын
I came up with the same answer based on how I could create a straw in cad. Create a solid cylinder and use the hole command to create 1 hole through the entire thing.
@sed62 жыл бұрын
Yes, a rod with a hole in it!
@X22GJP2 жыл бұрын
Of course no other comments were read at the time either...
@DarkSession6208 Жыл бұрын
Non mathematically speaking it must have only one hole for engineers. Because if you drill 16 Holes into a metal plate with a regular drill to put screws inside its still just 16 holes and not 32. If you would tell 1000 handcrafters to drill 16 holes they would all drill only 16 holes, no matter how long or wide the object is they drill into. I think this is the only explanation as to why its only one hole for the majority of people.
@dellmix164 жыл бұрын
Normal person: 2 holes Mathematician: 1 hole Philosopher: 0 holes
@ahmadabdullah81684 жыл бұрын
Me: Infinite holes
@grobertoac24304 жыл бұрын
Any normal person says there's 1 hole...
@ariesmars294 жыл бұрын
A physicist could argue that it has an infinite number of holes aligned beside each other. Or be like vsauce, use his reasoning with the "How many holes does a donut have?" video.
@ahmadabdullah81684 жыл бұрын
@@ariesmars29 so am i a physicist? 🤔🤔
@CR3W1SH03S3 жыл бұрын
Neo: There is no straw.
@0colorad06 жыл бұрын
Wait-wait-wait Do you really expect Buzzfeed to do something reasonable?
@BallJuiceOfZeus6 жыл бұрын
Is there a spider on your ceiling or something?
@TuberTugger6 жыл бұрын
They just create buzz and then feed it. HOLYCRAP! Names amirit?
@austrianmapper63006 жыл бұрын
Ball Juice Of Zeus xD
@Myemnhk6 жыл бұрын
Nah
@tylerbeardshow6 жыл бұрын
You have 16 subs for some reason.
@azaz911c3 жыл бұрын
Love this channel. As a patent lawyer, I actually have to consider questions quite similar to this on a routine basis. "Is this two holes? Or one long hole? Or if I call this a 'straw' then is it implied there is a hole, and if I say there is a hole, then am I saying there's two holes?" The process of drafting a good patent claim is bit like doing math in words.
@thegoonist3 жыл бұрын
well so basically it depends on the definition of a hole. the topological definition would give the answer 1. if you define a hole intuitively, not mathematically, as any entrance into the object's 'core', then it has 2 holes.
@jiminauburn50732 жыл бұрын
No, because then when you drill a hole in a piece of wood or metal, you would have drilled two holes?
@trisk4806 Жыл бұрын
@@jiminauburn5073 So if you were to create a hole in a tree, would you say that has 2 holes?
@jiminauburn5073 Жыл бұрын
@@trisk4806 I agree with you. I was disputing the OP, saying that you would not have two holes if you drilled a hole in a piece of wood.
@garychap83846 жыл бұрын
Here's ALL the correct answers : Straws have one hole, topographically speaking - but only because, in the field of topology, a hole has a very specific meaning and we're considering the straw to be an ideal mathematical surface (which it clearly isn't) Then there's semantics... one can dig a hole in the ground but it is not (topographically speaking) a hole - however it IS still a hole according to the english language. How many of these non-topological holes a straw has is merely a question of scale... since the surface of a straw is not an ideal surface. So, the answer is likely to be between zero and trillions. Then there's the functional answer. Having defined the object to be a straw - how many holes does the STRAW have? None... it is a perfect straw. If it had a hole it wouldn't work very well. This is a logical statement based upon types, equivalent to asking whether a bicycles inner tube has a hole in it ... the concept of the item itself establishes the baseline of form, and this ideal conceptual form is then compared to the item under test. Then there's the material sciences answer. A straw has enough tiny (and, indeed, also properly topological) holes in it to lose water/gas molecules by osmosis, so again the answer is trillions. This IS still a topological answer, but one properly recognising that the straw is NOT some ideal mathematical surface as those weird beardy mathemagicians would have you believe. Then there's a pragmatic materialists answer... there IS no straw, just a collection of atoms which are held in proximity but never touch. The concept of holes cannot be reconciled with this view. Which brings us neatly to the Zen answer: Mu! Clearly one needs to first : - define a straw that we can all agree on. - define a hole that we all can agree on. - define a scale that we can all agree on. Only then, can a proper answer be attempted. To hold out that a hole is a strictly topographic feature and that we should imagine a straw to be an ideal surface - is a cartoonish simplification. Similarly, one could establish how many sheep can fit in a field by first considering all sheep to be perfect spheres... ... by doing so, we answer an *entirely different question* - and usually one which is more comfortable to work on. But yes, I'd also default to claiming that a straw only has one hole... and, probably, later get arrested for brawling with pragmatists in the car park.
@JackRule166 жыл бұрын
GaryChap minimum 10 minute writeup
@MidnightBloomDev6 жыл бұрын
GaryChap Modern Sofokles
@KahnDevine6 жыл бұрын
Stfu nerd
@sirius94366 жыл бұрын
Kahn Devine no u
@KahnDevine6 жыл бұрын
Rubik’s cube 21 lmao kid go back to roblox
@potatomanW6 жыл бұрын
I explain it like this. If you cut a hole in a paper it makes one hole. It you thicken the paper, say a block of wood and cut a hole, there will still be one hole. So a straw is basically a super tall but skinny piece of paper with 1 hole.
@Twigpi6 жыл бұрын
What does this have to do with astronomy?
@idlingdove52176 жыл бұрын
+potato man Star or straw? There's a difference.
@jaysanchez44076 жыл бұрын
Okay imagine a ball and you poke a hole right? And then you poke a hole on another random spot so does that still make it one whole? No it's two
@potatomanW6 жыл бұрын
Juan Carballo unless you poke on hole all the way through or you poke two that meet in the middle
@idlingdove52176 жыл бұрын
+Juan Carballo If you poke a hole all the way through a ball so that it breaks on through to the other side, that's the same as a straw, one hole. If you poke a "hole" halfway through a ball, it's not a "hole" topologically speaking, just an "indentation", which does not alter the topology of the ball.
@erikjonromnes2 жыл бұрын
Depends on how you define a hole. It’s not only a mathematical problem, but also a linguistic and psychological-conceptual problem.
@Clynikal2 жыл бұрын
I agree. It would have been nice to see an application of its mathematical use. Otherwise I’m left thinking the mathematician has just defined it their way without respecting another perspective. I do however accept that there is just one hole, mostly because I would consider that if the tube was bent into a continuous circle there would be only one hole.
@Clynikal2 жыл бұрын
I just saw the donut comment 🤣 I guess that makes two holes
@kooraiber Жыл бұрын
If we're talking about real world than It's exclusively mathematical problem.
@bamgyuchoi35303 жыл бұрын
came here because of txt debate at weverse
@alltheboysloveleah3 жыл бұрын
Same I'm team one hole
@KalleVonEi3 жыл бұрын
@@alltheboysloveleah team one hole rules
@purplepurplepurple21623 жыл бұрын
I am here because of the poll
@singhanmolpreet59356 жыл бұрын
It also depends on how you define a hole.
@gabi17656 жыл бұрын
No it depends on what is a hole
@realdarcia23545 жыл бұрын
Which has different definitions in different languages
@Ham24brand5 жыл бұрын
A hole is a hole, weather it goes all the way through the object of half way through its a hole.
@Ham24brand5 жыл бұрын
If its only like 1mm or less it might not be a hole
@linus67185 жыл бұрын
Yeah, you could either define it as just an opening on the surface of an object, or the entire empty space inside the object.
@syver96 жыл бұрын
0 holes proof: "Waiter! My Straw has a hole in it!" - Waiter brings new straw. Q.E.D.
@VipulMehta94267876196 жыл бұрын
Will Mack my underwear have 3 holes
@kubadzejkob3326 жыл бұрын
Vipul Mehta That's 3 than it should have.
@AngelRivera-mc8zc6 жыл бұрын
“QED” lol!! Nice proof
@jimihenrik116 жыл бұрын
Well, common sense makes you interpret the statement as "one hole that shouldn't be there".
@Firestar-rm8df6 жыл бұрын
Vipul Mehta no, that's one hole
@ICantSpellDawg3 жыл бұрын
1 hole is probably the most practical answer. The material used to make the straw, which effectively is the entirety of the straw - has 0 holes, but that material was formed specifically to create an aperture, which now meets the definition of "hole" The less compelling answer could be 2 unique openings, where the materials seems to open up And no longer restrict the contents of the straw, so 2 holes
@jovetj8 ай бұрын
You could make a straw (albeit an impractical one) by taking a block of wood and drilling a hole through it. One hole!
@shivthukral13 жыл бұрын
Your content is very interesting. Thank you for posting. I initially thought a straw would have infinite holes. Why? - A straw can be thought of as infinite number of 2-D circles stacked together - each circle having 1 hole. :)
@whitewhitewhite24463 жыл бұрын
One I saw a chair with a mustache on it and then a dancing water bottle went up to the to me to you and said hey, why don't we see some picture frames fall out to the ceiling tonight
@whitewhitewhite24463 жыл бұрын
a huge chunk from the center is missing, that is the definition of a 🕳
@jamessmith42872 жыл бұрын
Cash cab..... With
@tomatomediumrare2 жыл бұрын
This is actually pretty close to what he did. The difference is that the correct way is not to add the circles (and it's holes), but to multiply the circle. Also the multiplication is not by infinity, but by the straw's length :)
@mrnik.02 жыл бұрын
Multiplication is just addition with extra steps
@putteslaintxtbks51666 жыл бұрын
One hole, two openings.
@piolio70866 жыл бұрын
puttesla intxtbks But ppl would think hole is equal to opening...An entrance hole/opening and an exit hole/opening
@chaschoune6 жыл бұрын
Pio Lio: then people are wrong. If you make a hole in a door to put a handle, you make one hole that you can see from both side, Nobody would say they made 2 holes. The lenght / depth of the hole has no impact on the number of holes.
@jojojorisjhjosef6 жыл бұрын
How many openings does a doughnut have?
@mostafaashrafelfeel9076 жыл бұрын
puttesla intxtbks well done you answered it in four words👍👍👍
@paulpeterson42166 жыл бұрын
Just to be anarchic about it, if you take a solid 3-d structure and drill a hole in it, you seem to have made one hole; but, by the definition given in the video, you have not made a hole at all, unless you go all the way through. However, if you take a 2-d piece of paper and connect one end to the other creating a tube (straw) then there is no hole in the paper, so that structure could readily be said to have no holes. Alternately, if you take your 3-d solid, and drill two holes, one in each end, and they eventually meet, does one of the holes cease to exist. Create a set of axioms or definitions that will support your conclusions and you can get any conclusion you like.
@FlamingFoxProd4 жыл бұрын
Me at 2 AM: I need to go to sleep My brain: No, you need to find out how many holes a straw has
@purplepurplepurple21623 жыл бұрын
a hole is through something not interested something, spread the word
@BitwiseMobile2 жыл бұрын
Before I watch the video I'm going to say no holes. The mathematical definition of a hole is very precise. For polyhedra the definition is Euler's Formula for Polyhedra. I started looking a little closer at topographic analysis, and even then by strict definition there are no holes. It's basically a plane that has been curved (revolved) along an axis. The plane is continuous, so there are no holes geometrically speaking.
@pulsar223 жыл бұрын
0 holes is also a good answer. Think of a straw that starts out as a sheet with 0 holes. Then you wrap a sheet into a cylinder and attach one end to the other. The sheet still has no holes, but now they inscribe a space inside it. 2 holes is definitely wrong any way you construct it.
@lawganime93112 жыл бұрын
"attach one end to the other" by doing that you created a hole topologically speaking
@daminkon2462 жыл бұрын
topology is really weird, and in there, if you connect something you're changing the object basically. If you connect a cylinder, you're making something different, which is an object with 1 hole
@ultru35252 жыл бұрын
Why would the properties of a straw formed by joining two sides of a rectangle be any different from the properties of a straw formed by the topological product of a circle and an interval? Contrary to what your math teacher may have told you, it's the end result that matters, not how you got there. It's kinda like thinking the result of 2² is a square number, but the result of 2+2 isn't.
@RealRupert5 жыл бұрын
The straw has 0 holes and 1 tunnel
@kytacoyigo39885 жыл бұрын
Yeah that’s true
@Magnus_Deus5 жыл бұрын
Not a hole. A fooking tasty tunnel
@kople59005 жыл бұрын
It's just a long donut
@spiderdude20995 жыл бұрын
RealRupert topologically, there is no difference between a hole and a "tunnel" as you call it. If a circle with no depth drawn on a piece of paper is a "hole" then more accurately it is a hole with no depth. An open cylinder or "tunnel" is therefore a hole with depth L. It's less accurate to say a tunnel is not a hole than it is to say all tunnels are just holes with depth
@deepaksinghairy78855 жыл бұрын
Give this guy a Nobel
@robertheal51376 жыл бұрын
The reason why people "debate" about it, is because it is a debate about the meaning of language words, which is defined by the people, and not by experts. What is a "hole", anyway.
@clementlo32636 жыл бұрын
Mouth is an entry hole and the ass is an exit hole. Is it really 1 hole or two holes?
@piolio70866 жыл бұрын
Clement Lo mind blown!
@piolio70866 жыл бұрын
Riki but it has two openings, right?....and ppl just use "hole" to replace "opening", so saying there is two hole is not entirely incorrect
@BigDBrian6 жыл бұрын
there's a topological definition for it which ought to be used in mathematics. but in real life its not practical. e.g. if you dug a hole in your backyard, the topological definition would say that you haven't added a hole at all.
@BigDBrian6 жыл бұрын
Gustavo The question wasn't "how many holes does THIS straw have" but "how many holes does A straw have" meaning, if in your definition of straw you consider it an object with a hole, then the answer to those question would be 1, not 0.
@nurinsyirah63983 жыл бұрын
For real I watched this because of txt debate
@lizzy65143 жыл бұрын
LMAO REALLY WAIT IS IT ON KZfaq I WANNA WATCH THEM DEBATE ABOUT THIS
@nurinsyirah63983 жыл бұрын
@@lizzy6514 they debate it on weverse!! They commented on moa post and making a whole debate there 😂
@lizzy65143 жыл бұрын
@@nurinsyirah6398 Ohhh LMAO THANKS
@hydropage28552 жыл бұрын
3 holes, actually. I refuse to elaborate for I am fundamentally and undeniably correct
@liamg17062 ай бұрын
2 holes, one hollow as the straw is a tube
@hydropage28552 ай бұрын
@@liamg1706 No actually it’s 3 holes. You’re just too blind to see it
@liamg17062 ай бұрын
@@hydropage2855 there are 2 holes either end of cylindrical hollow tube. That is of what a straw is. You are too simple in the brain to realise that.
@hydropage28552 ай бұрын
@@liamg1706 How can you not see there’s a third one right there? It’s literally right there in plain sight and you can’t see it. Are you messing with me?
@liamg17062 ай бұрын
@@hydropage2855 for a 3rd to exist it would have to be seperate from the other 2 which in this case there is no seperate hole just one either end of the hollow tube
@michaelransom58416 жыл бұрын
there are two correct answers to this problem, depending on your starting point. As illustrated if the starting point is a circle then the straw has 1 hole, but if the starting point is a parametrized continuous surface in R^3 which curves back on itself, then the answer is 0 holes. The apparent paradox is due to the lack of initial definition.
@itismethatguy2 жыл бұрын
But then what even does have a hole
@nafnist2 жыл бұрын
@@itismethatguy That's the point being made.
@gustavohermandio14402 жыл бұрын
i have the feeling maths are over complicated for no reason
@Adventures_of_Marshmallow2 жыл бұрын
@@itismethatguy exactly. Holes don't exist. Holes are consequences of the geometry of the surface itself....
@someoneelse48112 жыл бұрын
My definition is that entrance = hole.
@heinenrby76006 жыл бұрын
I think much disagreement comes from how hole is defined in regular language and how it is defined in mathematics. In real life you can dig a hole in the dirt, but a mathematician would say it is not a hole, but an insignificant dent. Likewise the interpretation of the word hole can lead to disagreement in this conundrum. But the straw has 1 mathematical hole, that is for sure.
@joeo33776 жыл бұрын
Turns out "hole" is not defined mathematically, and by some definitions a real drinking straw that exists in the real world would have 2 holes, and depending on how you idealize the drinking straw it can have 1 or 3 holes.
@jbaird07246 жыл бұрын
I feel like a similar thing happens when using the word "theory." Scientifically for something to be a theory there are defined standards that have to be met. Problem is when most of us (and I'm guilty too) say theory, at best what we're describing is a hypothesis. In everyday speech people have "theories" about everything... No, no we don't, we've mostly got ideas and an occasional hypothesis. So then when an article is published regarding say gravity, and it's referred to as a theory, people misinterpret. Establishing definitions is paramount before a dialogue can take place.
@zelda123466 жыл бұрын
Depends on your reference surface. If you consider only the surface of the dirt in an arbitrary circle around the point of interest, what you end up with is what one may consider a "hole" mathematically speaking. After all, you can technically go through surfaces as if the yaren't there. A surface is just a set of points. It has no specific physicality.
@jaronfeld1236 жыл бұрын
@Z-Statistic Good point. These foold need to learn some non-Euclidean Topology
@chrismorse38626 жыл бұрын
I think what made me decide on one hole is that the wall thickness of the straw is measurable. even if its just a few thousandths that makes it a side/face that you would use to calculate the surface area. so basically you have a cylinder with a hole through it, even if the hole is near the size of the outside diameter and the straw was manufactured by extrusion.
@purifiedwatr2 жыл бұрын
I literally just thought of the straw as a donut and went “oh that’s easy, there’s one!”
@giantsweet14723 жыл бұрын
I would say it depends on how the straw was made. Most plastic straws are a product of a long cylinder of plastic getting a hole punched in it and being cut and results in 1 hole. If a straw was made from a piece of plastic or paper that was rolled/folded and then sealed along the length, I'd say that it has 0 holes as it is not a circle/tube/cylinder, but a rectangular surface that has been rolled.
@vindi16710 ай бұрын
clever, but i don't agree.
@sadhlife6 жыл бұрын
Does this mean that if i fold a piece of paper into a cylinder and tape it, I've just made a hole in it?
@clementlo32636 жыл бұрын
The question will then be can you make a hole in a pice of paper without poking a hole through it?
@sadhlife6 жыл бұрын
Clement Lo that's a great question. yes.
@zat12456 жыл бұрын
Tushar Sadhwani No you’ve made it into a hole
@davidb52056 жыл бұрын
Taping the ends together changes the topology of object. You cannot change the number of holes in an object without fusing two separate ends together or tearing apart two ends that are connected.
@vinodkumar-wm3oq6 жыл бұрын
Nice question, think about making a hole with modeling clay. Now you don't have the taping problem.
@whatthefunction91406 жыл бұрын
All I could see was a coffee mug.
@paintingjo68426 жыл бұрын
Strange, I was seeing a Klein bottle split in half.
@whatthefunction91406 жыл бұрын
Now I see a furry red rabbit.
@lenn9396 жыл бұрын
PaintingJo You were seeing a Möbius strip?
@alexeigarbuz83666 жыл бұрын
Nice one 👍
@paintingjo68426 жыл бұрын
;P
@sidali.ainouche4 жыл бұрын
01 - We can close one of the two holes and leave the other open : so there are two holes 02 - If the straw is conical : we will say that one hole is larger than the other : so there are two holes 03 - What if the straw is Y-shaped : will we say that it has 2 or 3 holes (knowing that we only added one hole) : so the original one has two holes
@jamessmith42872 жыл бұрын
wrong, wrong, and wrong again!!
@DaveKraft12 жыл бұрын
Using the formula you provide, S X ("0",L), the 2-dimensional circle has "0" holes, since the L=0, and S X "0" = "0". You only introduce a "hole" when "L" becomes a positive number.
@paulparker14256 жыл бұрын
Morphing the shape of the straw like you did is the most intuitive way (for me) of looking at the problem. A good way to illustrate this is with the similar question of how many holes a tea cup with a closed loop for a handle has. Morphing the cup into a toroid gives a strong intuitive basis for working out similar problems in the future.
@SimGamerTV2 жыл бұрын
Does this mean that a hollow sphere with an opening at the top and the bottom mathematically has only one hole?
@AlDunbar2 жыл бұрын
@@SimGamerTV from a topological viewpoint, yes, a hollow sphere with two holes top and bottom has one hole. Similarly a hollow sphere with on hole in its surface has zero holes. If you stretch it out, you will see it has the same topology as a disk, with the edges of that single "hole" now forming the circumference of the disk.
@AlDunbar2 жыл бұрын
Yes, probably a better example than my doughnut analogy.
@chazits2 жыл бұрын
@@AlDunbar similarily if you stretch the two opening sphere you will get a disc with one opening the circumference edge and the other opening the hole in the middle. So back to the straw (cylinder) , if you slit it lengthwise and roll it out it will form a rectangle with no hole , just as if you started with an unclosed circle it would not have a hole till it was closed.
@subscriberswithnovideosc-mk3up6 жыл бұрын
The straw has 1 hole, a glory hole
@thegang19886 жыл бұрын
🤢
@fundemort6 жыл бұрын
a--hole
@mccursedwallpapers72966 жыл бұрын
**Winds up arms* *GLORIOUS*
@thanhvinhnguyento70696 жыл бұрын
69696 subscribers with no videos challenge wish u luck with the challenge
@mystified23566 жыл бұрын
I kinda see u everywhere
@colmreynolds98692 жыл бұрын
Three. I wanted to piss everyone off, so I poked three holes in every straw at the McDonald's fountain machine.
@chuckokc2 жыл бұрын
Love the content. If one of the openings were sealed (plugged or capped), without losing the shape of the cylinder, would there still be one hole? It wouldn't be a straw. At that point, the straw would lose its function. If both ends were sealed, would there still be a hole? Does a hole require at least one opening to be defined as a hole? From a functional point of view, my opinion is the straw has 2 holes or openings. There is probably a difference between a hole (passageway?) and an opening. Is there a proper term you would use for the openings?
@ojasdeshpande72962 жыл бұрын
Oh 1day old comment on a 4yr old vid nice
@gsuk282 жыл бұрын
Hopefully my reply will be more useful than simply pointing out how new your comment is... He said that a hole is a 2D space surrounded by a closed curve, so I'd say that a plugged straw still has a hole (just like if you dig a hole in the ground - it doesn't only become a hole once you dig through to the other side of the planet). If both ends were sealed, I'm not sure - I'd say that's probably not a hole (maybe a cavity?).
@Emanemoston2 жыл бұрын
A hole with only one opening is called a "blind" hole. Still a hole. If you sealed both ends, it would be hollow, but no hole.
@uanonymous10902 жыл бұрын
These people are over thinking these type of questions. The straw has two holes period! There is in fact one hole on each end of the straw. As you said if one end is sealed, there is one hole. Common sense does not exist in this world today.
@gsuk282 жыл бұрын
@@uanonymous1090 I think you're missing the point of the video. This is about topology, not colloquial use of terminology. If you say it has two holes, then great, but mathematically, it has one, and that's what's interesting about it. It's such a shame if an expert teaches you something but you hold onto your misconceptions by saying "nah - my common sense says otherwise".
@KuyAurelian4 жыл бұрын
What if you define a straw as an area rolled up into a cylinder? As a hole is a perforation, and straws are made not by punching holes in matter, but by wrapping sheets or extrusion, they don't really have "holes" in them.
@rhodesj18932 жыл бұрын
They do... a through hole. You just created what is commonly referred to as a "tube".
@Person012342 жыл бұрын
@@rhodesj1893 But if it's a tube then it's debatably not a hole, for the reason mentioned above. there's a reason those two things are different words.
@zabombolo8412 Жыл бұрын
@@Person01234 By rolling a sheet of paper into a tube, you break the rules of homeomorphism. A sheet of paper has no hole. You can‘t flatten a strawhat and make the hole vanish while following the rules of homeomorphism.
@jawkneeG6 жыл бұрын
If you punch a whole through thin piece of dry wall, that's 1 hole. It has the entry and exit but is considered 1 hole in the wall. Same as if you ram an iron rod through many pieces of dry wall, creating a long straw shape. Still 1 hole. But what if you dig a cave-like hole in the side of a mountain. It has no exit. 1 hole. You start another hole on the other side of the mountain. That's 2 separate holes. You then connect the 2 tunnels in the middle, is there still 2 holes or did you just reduce the holes from 2 to 1? Anyways it all depends how you're defining the word hole to begin with.
@evelynkeane89796 жыл бұрын
johnny_schwifty.soundcloud as soon as they connect then you’re back to having one hole as you can’t define where one hole is and whether the other is, separate to it, ergo it’s only got one hole
@Nithinsuhas6 жыл бұрын
i would cal the first and second a "PIT" once joined it become a "HOLE"
@texasyankee35126 жыл бұрын
no a pathway or tunnel.
@OwnedSoda13BBH6 жыл бұрын
johnny_schwifty.soundcloud what about ur mouth and ur ass. They're both connected with a long tunnel of an entry and an exit and people considered them two different holes
@wessmith43666 жыл бұрын
Johnny - You have TWO holes until they meet. Note that "hole" is simply a word, while the math itself doesn't change. If you apply your logic about the iron rod and the drywall to it. Think of this. When the "Chunnel" was being built, they bored from both ends. There were two distinct holes. You couldn't go from one side to the other without exiting one hole and entering the other. Once the two holes met, they became one hole. Here's another way of thinking about it. You take an ice cube in each hand, allow them to melt a bit, then you hold them touching each other and allow them to freeze together. How many ice cubes do you now have?
@yn7283 жыл бұрын
Who else is here bcs of txt's argument?
@trishasingh98393 жыл бұрын
Me!!
@purplepurplepurple21623 жыл бұрын
I'm here because of the poll
@globalvoice...2 жыл бұрын
Taking forward the example in this video, instead of stretching the 2 dimensional circle-with-1-hole to form a straw-length, we could consider the length of this straw being composed of an infinite number of such 2D circles stacked together. The straw then has an infinite number of holes! Now, since the group of the 2D circles result in a single straw, the group of those infinite holes collectively become 1 single hole. On the other hand, if a paper sheet were to be rolled into a cylinder/straw, it could be said that there are no holes as there wasn't any to begin with, nor has the paper been punctured. Yes, there would be inner and outer 'space' within and around the straw.
@MilaneseMoon5 жыл бұрын
Yes but this isnt even about math, its about how you define the word straw and hole
@toxiq73995 жыл бұрын
Pretty sure it’s about math.
@freerunnerold84285 жыл бұрын
Precise definition is done with math. But yeah I get ur point.
@ima2455 жыл бұрын
PewDiePie 3 yeah, for me it is not a circle with depth, it’s a bended rectangle.
@detachsoup60615 жыл бұрын
PewDiePie 3 no this is about a part of math, the part of math that is about shapes, and wich you can use to prove things.
@yurenchu5 жыл бұрын
PewDiePie 3 is right, this video is not really about a clever insight in math, but about how the mathematical definition of "hole" differs from the everyday (pluriform) use of the word "hole" in English. Sure, the topological "hole" is specifically defined so that it serves a useful and meaningful mathematical purpose, but this video doesn't show us anything of that purpose. For the casual viewer, the way mathematics chose to define "hole" seems just arbitrary.
@invention646 жыл бұрын
It is clearly infinite holes stacked on top of each other
@TheJolgo6 жыл бұрын
Depends of ,,hole" word definition.
@elementar23592 жыл бұрын
in bed: ah yes babe, stick it in da hole the invention64: ?????? ahhhhh, you mean "infinity" holes...
@aaronbredon29482 жыл бұрын
Woodworking/Metalworking answer: If you start with a cylinder and start drilling holes, how many holes would you drill to make a straw? Answer: 1 It gets more complicated if you were to drill at a right angle going through the straw completely, intersecting the hole through the straw. You would then have 3 holes.
@angelica90563 жыл бұрын
coming here after txt's debate 👏
@finneggers66126 жыл бұрын
I've never done something in that field but here is my explanation so far: Assuming that you take a piece of paper without holes. You have an area with 0 holes. If you create a hole in there, you have a plane with a hole but notice that the amount of borders that exist has increased by 1. Instead of having just 1 border, you end up with 2. This can be translated to any surface I assume. Second, I imagined a cup. Nobody would ever say that a cup has a hole. It's just a shaped surface. Now, if you remove the bottom of the cup, you will have a cup with a hole on one side which is pretty much a straw. Therefor a straw has only 1 hole.
@sarcasm-836 жыл бұрын
I'm fine with all 3 answers. 0 - because it's basically a tube. I wouldn't say the tube has a hole, unless there's a hole to it's side. 1 - because there's 1 hole through it. 2 - because you could advice someone to put something inside the straw from 2 different holes. In the end; I don't care. It's a straw. Just don't throw em in the nature/ocean.
@efoxxok74782 жыл бұрын
For once I disagree, not with your answer, but with your description. You described a 2d circle with no thickness to the straw. In reality the topological makeup of the straw, the circle part that is consists of two circles. The inner and the outer diameters. No matter how thin walled, no matter how thin you slice the straw there will be these two circles. Without them the straw cannot exist. Therefore all three answers are correct depending on the perspective of the viewer.
@Xtariz6 ай бұрын
Meanwhile I'm just here like a cylinder doesn't have any holes... it has an opening 😂
@sehwag2825 жыл бұрын
Oh boy I win yesssss!!! I’m gonna buy mocha frape now and explain hole theory to Macdonald cashier let’s see how it goes
@OphiuchiChannel5 жыл бұрын
Youre a champ 👍
@markiyanhapyak3495 жыл бұрын
MmhH... .
@adi-sngh4 жыл бұрын
@@OphiuchiChannel lol
@KajtekKostnica3 жыл бұрын
How it went?
@Sir_Isaac_Newton_3 жыл бұрын
2 years ago lmfao I doubt we'll ever know
@Goryus6 жыл бұрын
I think a more casual-friendly way to explain it is to ask: "how many holes does a donut have?" You can deform a torus into a straw.
@jonathan_herr6 жыл бұрын
Derek Neal but couldn't it be zero as well? Extrude a long rectangle around a circular path and attach it to itself?
@paintingjo68426 жыл бұрын
The fact that you attach ends together changes the topology, so no.
@werner1348976 жыл бұрын
No, cutting is not allowed
@davidb52056 жыл бұрын
REMEMBER, YOU MUSTN'T TEAR OR CREASE IT.
@USAboysp6 жыл бұрын
there are different types of holes and you must consider the second hole the torus surrounds so they are no topologically equivalent i.e T^2 is isomorphic to S^1 x S^1 not S^1 X R like the straw is here in the video.
@Shadow__1332 жыл бұрын
After watching this video I understand why "the media" avoid asking for math experts opinion.
@jeffcarroll65532 жыл бұрын
To my mind it has no holes and two openings, it is a hollow tube. A hole has a bottom which defines the term hole, as in dig a hole. If you dig a hole deep enough, or long enough you get a tunnel which is a tube. If you make a hole then that has no bottom, unless in your jeans or underwear, but the that is then not a straw.
@Kevin-dt9xm2 жыл бұрын
you're describing a blind hole. there are blind holes and through holes. a straw has one through hole, as does a donut, as does a piece of paper with a hole in it, etc.
@victorsvidss6 жыл бұрын
Notice how the video is 4.20 long
@dpage4465 жыл бұрын
Illuminati: Stay right where you are
@fernandocontreras49815 жыл бұрын
Yeet
@7zagazoo7485 жыл бұрын
Notice how SHUT UP
@markiyanhapyak3495 жыл бұрын
So what?
@markiyanhapyak3495 жыл бұрын
And: no→ 4:20.
@forg78645 жыл бұрын
My answer was 0 holes.. But 1 hole makes sense now
@gumtoonistbeats7842 Жыл бұрын
to me, people trying to say its 2 holes are like flat earthers, who dont think and only use what they see at face value. its obviously 1 long hole when you actually think about it.
@senkosan46073 жыл бұрын
actually problem depends on definiton of "hole" and while question asking isn't mentioned anything so 2 is acceptable too cause answer of 2 fits our daily using of "hole".
@asiamies91533 жыл бұрын
But not correct
@senkosan46073 жыл бұрын
@@asiamies9153 what?!+++++
@redredred84082 жыл бұрын
But it isn't right. We don't say CDs have 2 holes. If you just make the cd taller and less thick, you get a straw, and doing that doesn't change the amount of hole there are. If it did, it wouldn't make sense
@ceejayrob5 жыл бұрын
This is how I have explained the 1 hole answer: imagine a sliver of wood as thin as a piece of paper with a single hole punched in it, now make the wood thicker, still only one hole. No matter how you change the shape of the surrounding wood, it will just be one hole, so if you had a very thick piece of wood, and then shaved off the excess and just leave a thin bit around the hole, you have a straw!
@Durwood2k Жыл бұрын
You only have 1 hole in a 2-dimensional space. Since we’re talking about 3 dimensions, it has two holes.
@banjosambar6 жыл бұрын
1 hole, it's called a through hole as it has 2 openings as aposed to a blind hole that has only 1.
@gerryiles39256 жыл бұрын
A "blind hole", as you put it, is not, topologically speaking, a hole, at all...
@mahikannakiham24776 жыл бұрын
Gerry Iles That is, until you realize that objects made of atoms dont give a crap about the silly rules of topology. Good luck at stretching a blind hole in real life.
@lemniscatusofficial6 жыл бұрын
+Mahikan Nakiham objects do give lots of crap about topology. solid state physics, biology, quantum field theory, and data analysis etc. there's a reason Nobel Prize was given for it.
@lemniscatusofficial6 жыл бұрын
+Mahikan Nakiham they do. how many years of school did you skip. all?
@noobstalker16 жыл бұрын
So does a long tunnel with an opening on the other side have one or two holes?
@TheBaylanscroftSignal10 ай бұрын
0, because it IS a hole 1, if a hole can have itself 2, when "whole(s)" refers to aperture(s)
@nienke7713 Жыл бұрын
Not topologicallly/theoretically but more from a technical/practical perspective, I'd say it depends on how it's produced: If you take a sheet and roll it into a tube, then that would be 0 holes. If you take a solid cylinder and bore a hole through it, it has 1 hole. If you take a hollow cylinder and pole a hole in the two ends, it has 2 holes. You might even consider a hollow cylinder with a membrane in the middle, thus being like the hollow cylinder but requiring an additional hole through the middle membrane, making 3 holes. And you can add multiple membranes to increase the number of holes.
@akuunreach6 жыл бұрын
I think the confusion comes from differences in basic language and in topology. Let me give an example, if we take a balloon and ask any average person, now many holes does this balloon have they will say one. If you ask someone that deals with topology, they may say one, as it's a common excepted answer. However topologically a balloon has 0 holes unless we poke one in it to complete the hole. In topology any object with 0 holes can be transformed into any other object with 0 holes. (Paper, Balloon, Cup, Fork, etc.) The same is true of an object with 1 hole. (Donut, Coffee Cup, Straw, Ring, etc.) So it really comes down to whether we are speaking in basic language, or topology. So both 1 and 2 are correct, we just need to agree on which system is being used.
@TuberTugger6 жыл бұрын
All three answers are correct when given the right definition of hole. If a hole has to be intentionally added to a complete object, then zero is also an exceptionable answer. For example, if someone said, "This straw doesn't work. It has a hole in it". That implied that in language, the word straw is a complete object and any descriptor is in addition to that object. Just thought I'd help complete your point for all three answers.
@miot226 жыл бұрын
Derek Gooding I think the implication of that statement is that the straw has an [extraneous] hole, therefore it doesn’t work. Not that the straw had no holes prior and now that it does have one, ceases to work. So in that sense the meaning of straw already implies a hole to begin with, otherwise it would just be a solid stick or a stick with a deep depression (ie a long and thin cup).
@netrogue16 жыл бұрын
If I'm understanding you correctly, this is in line with my way of thinking. I consider it a cylinder if the center of the straw is not "missing". Therefore, my answer is that a straw has no holes until one occurs through the side-wall. By name, a "straw" starts as a whole, not holey.... ;)
@miot226 жыл бұрын
netrogue1 I don’t think we’re saying the same thing entirely. We both agree that by definition a straw comes with a hole. That means a complete and functional straw is an object that inherently embodies a hole. For me that means the identity of the whole object contains a hole. That hole is what makes it a straw. So for us to call it a straw, there must be one identifiable hole. So when someone states there is a hole in their straw, they are imo implying that this hole is extra to the one that makes the straw a straw. They need not describe the extraneous hole as a second hole since that meaning is implied.
@jiama84614 жыл бұрын
At first, you should show the exact definition of HOLE in mathematical term.
@purplepurplepurple21623 жыл бұрын
Yes because it is through something
@prasasti234 жыл бұрын
I don't need sleep, I need answer
@edl65324 күн бұрын
It depends on how you define what a hole is and how you define a straw. A straw can simply be defined as a curving surface with a much lesser thickness than length and a curvature causing the intersects itself along two of its edges. Meaning the tunnel through the straw is extraneous to it, hence it has "zero" holes. it all depends on how the system is defined and what is included in the system. There is no a single answer based on the straw itself without a definition of the straw and of what a hole is.
@joshualiley4 жыл бұрын
It's an intriguing one by the way that if you were to make a straw with 3 ends, you would say it had 3 holes since there were 3 places a substance could come out of the containment of the straw. If you then remove 1 of the holes, for example return it back into the original straw, surely it would now have 2 holes. Just like if I asked how many holes are in a regular t-shirt. You would say 4: the 2 sleeves, the collar and the base. If I sew up the sleeves, you would say it had 2 holes: the collar and the base. But it's still topologically the same shape as a straw. However, the straw having 1 hole totally makes sense; it is all the same space all the way through. So does that mean that a t-shirt really just has 1 massive hole? It's all the same space. Or does it mean that a straw has 2 holes? I think it always depends on how you define the terms in the question. Just like you can't assume an angle in a triangle is a right angle because it looks like it, you also need to set the parameters of the question. And therefore the answer is there isn't really a correct answer
@musicfan93092 жыл бұрын
You are interchanging hole with opening or orifice... and they are not the same thing. A Door is not a Hole in your house... Neither is a window. Your sewage drain is a hole in the floor to the city sewage or your septic tank... sure. Your Radiator has an inlet, outlet, petcock drain, and burp bleed-off tube.... but only ever has a "hole" if it is leaking. Words need to be used appropriately and correctly.
@cakefromkorea15076 жыл бұрын
Video starts at 2:10
@Zak-ob5ze6 жыл бұрын
Thanks
@shivamchauhan83816 жыл бұрын
Thanks
@eraalam24726 жыл бұрын
thanks
@mr_niceman6 жыл бұрын
Thanks
@Doggaebi.6 жыл бұрын
Yeah thanks mate
@Emanemoston2 жыл бұрын
Fun video. My first thought was "this has to be debated?" If you gave me a print of a straw and told me to make it, I would take some rod stock, cut it to length, turn it to the major OD, and drill one hole in it to make the proper ID.
@Geoffr5242 жыл бұрын
Congratulations: You scored a "Hole in One" straw. "This being a two ended question".
@HelloWorld-ve2dc4 жыл бұрын
We should understand the difference between hole and opening. Hole is one but straw has two opening.
@saltypotatochip47073 жыл бұрын
I think this is the perfect response
@magnitudefallout39443 жыл бұрын
A hole was always equivalent to a tunnel for me, so this "debate" is really confusing...
@graygraygray44543 жыл бұрын
What is an opening that isn't a hole?
@pinkpinkpink77173 жыл бұрын
@@graygraygray4454 a plate
@Rachara6 жыл бұрын
2:15 It basically takes 15 seconds to go from "Lets keep the party rolling and make math exciting for everyone" to "dafuq he just say"
@Alucard-gt1zf6 жыл бұрын
Steven Warren all he said was the unit circle x length.....
@blackrocket43826 жыл бұрын
Steven Warren 'short' he said
@yumao3627Ай бұрын
for the people who think 2 holes, the hole at the top is connected to the hole at the bottom as the “tubeway” of the straw, so they’re the same hole
@ga14th_d052 жыл бұрын
I mean, the straw could be made by rolling up a flat surface so it could be 0 holes.
@MARiordan4 жыл бұрын
Great videos, thanks Presh! Another intuitive way to look at this is as follows. Imagine that you have a small metal cylinder 2cm diameter and 3cm long. You place it standing upright in a bench drill and drill a 5mm hole in the center of the round face through to the other face. (You now effectively have a "straw".) How many holes did you drill in the cylinder? Just one! This logical answer is independent of the dimensions (and material) of the original cylinder.
@jiminauburn50732 жыл бұрын
Or you have one piece of paper with no holes. You roll it upon itself and secure it with adhesive. Still a piece of paper with no holes, just rolled to form a straw.
@danielbowman43952 жыл бұрын
If you drill the hole almost halfway through the cylinder, and drill a second hole from the other end, you have two holes. Now if you complete the drill through, you have now only one hole. So by drilling a 'third' hole, you've subtracted a hole?
@brotherabrahamzamarripa91086 жыл бұрын
It's black and blue. Or white and gold.
@afsarmstrongfiresafety74603 жыл бұрын
From an engineering standpoint, it's also one hole. It was a solid cylinder of material, there was a single through-drilling operation to create the bore, ergo one hole.
@Kounomura3 ай бұрын
The explanation would be much more understandable if we consider the straw as a cylinder, which we gradually widen at one end and turn it into a cone (we stretch it, which is allowed in the topology), and then, by stretching the cone further, we turn it into a planar circular ring. Which obviously has 1 hole.
@michaelgeiss7416 жыл бұрын
How many holes are there on an 18 hole golf course? How much dirt is in a 1m x 2m x 3m hole? Are any of the holes that the movie "Holes" is named for actually holes? Could there be a hole in the definition of hole, rather than a hole in people's logic? Topologically speaking I should be able to eat as many donut holes as I want and never gain weight!
@Mr.D.C.6 жыл бұрын
I love this comment so much
@Tfin6 жыл бұрын
You wouldn't gain any topological weight, that's certain.
@kirasmith11476 жыл бұрын
Michael Geiss the answer to that question is the fact that there are different types of holes. It depends on the context.
@michaelgeiss7416 жыл бұрын
Evan Smith Thanks! That was the exact point of my intentionally humorous questions.
@bobbypederson6 жыл бұрын
Michael Geiss woah! Lmao
@jeffc59745 жыл бұрын
"When science is in the news, scientists are consulted." ...unless it is anthropogenic climate change.
@MangoMotors4 жыл бұрын
and unfortunately a pandemic...
@spaghettiking6533 жыл бұрын
What do you mean?
@jeffc59743 жыл бұрын
@@spaghettiking653 Who are you asking?
@spaghettiking6533 жыл бұрын
@@jeffc5974 You - are scientists not consulted on anthropogenic climate change? Surely that's the field where research is most cited, right?
@jeffc59743 жыл бұрын
@@spaghettiking653 It was a bit of an exaggeration, but non-experts are brought on news shows way more than experts, and when experts are brought on, it is much more likely there will also be a non-expert to contradict the expert.
@xxJing3 жыл бұрын
I will say that it has either 1 or 0 holes, depending on how you look at it. For instance, let’s say that you have a slab of plastic that has a hole in it. You then carve away enough plastic around that hole to leave something that resembles a straw. You haven’t increased the number of holes, you’ve just decreased the amount of plastic surrounding the hole and ended up with a straw. Secondly, let’s assume that you have a small sheet of plastic without any holes. You then simply wind the sheet of plastic around a cylinder (a pencil perhaps) and glue the ends together. This gives you a straw but you haven’t created any holes in the material, you have simply fashioned a straw out of a sheet of plastic.
@douggraham58123 жыл бұрын
That was my reasoning at first, but the discussion about toruses reminded me that by gluing the rectangle's long sides together you've changed its topology. It's now a surface with only two edges, not four. So yes, you made a hole.
@xxJing3 жыл бұрын
@@douggraham5812 Out of curiosity would you say that a straw with one side punctured has one hole or has two holes?
@thorandlundeve2 жыл бұрын
if a donut has 1 hole, so does a straw. but how about a shirt?
@lolroflundxd6 жыл бұрын
I am guessing 1. But really, the answer is: "It depends on how you define hole". And no, we don't need profesionall mathematicans to explain this. Because you don't have to use the mathematical definition for "hole".
@tennicktenstyl6 жыл бұрын
it depends how you define straw.
@HNL20006 жыл бұрын
IMO, it depends on how the straw in manufactured (ignoring classical topology because this is a straw, not a hypothetical shell in Euclidean space). The most common way to mass produce a straw is to create one long cylinder and then cut at regular intervals. For this explanation, I'll define a hole as an opening created in a closed shell. Imagine an infinitely long straw. At that point, you would be forced to say there are no holes, as the surface is completely self-enclosed. If I cut it in half, making it only infinite in one direction, it would have one hole. In the same way, if I were to cut it twice, it would have two separately created holes. A less common method of manufacturing straws is folding a rectangular strip into a cylinder. In this case, the straw has no holes, as it is an undamaged rectangle morphed into the third dimension. For there to be only one hole, the straw would a) have to be made by punching a long hole in a cylinder or b) never be created, existing just because it does. In the second case, we have traditional topology. All answers are equally right, depending on how you view this straw puzzle.
@Uerdue2 жыл бұрын
"Well, this is basically a doughnut, and for the doughnut we've already solved the problem. It has 1 hole."
@destrodevil69752 жыл бұрын
3am Body: please... sleep... Brain: *ayy do u want to know how many holes does a straw hav*
@xnick_uy6 жыл бұрын
Nice one. I guess you could've mentioned that the (physical) straw is also topologically equivalent to a "donut" (torus). And also show some object with two actual holes.
@alandouglas27896 жыл бұрын
xnick an object with actual two holes in it like a soccer ball ⚽️ it topologically equivalent to a doughnut as well you know...
@xnick_uy6 жыл бұрын
I don't see how, Alan. Could you clarify your observation? For me, an object with two holes could be reshaped into the form of the number eight, "8", and anything with a single hole into the form of the number zero, "0". How can you continuously transform the soccer ball into any of those?
@jonathankehn92026 жыл бұрын
Your nose has two holes. LoL
@numbers936 жыл бұрын
actually it's not equivalent to a donut, though they both have 1 hole. A donut (torus) is equivalent to the product of 2 circles.
@numbers936 жыл бұрын
actually nevermind a torus has 2 holes, technically. A 'hole' in mathematics is what you'd call an equivalence of loops. The 2 holes in the torus comes from the two circles being producted.
@DragoNate6 жыл бұрын
I thought of relating to doorways. Doorways are basically holes into another room. If you 2 doors in one room, regardless of the size or shape of the room, each doorway is a separate "hole" into that room; an entry point. The room inside is just the space between the entry points.
@brokenwave61256 жыл бұрын
DragoNate You've got a very flawed concept of this.
@DragoNate6 жыл бұрын
How is it flawed? I'm literally just sharing what it made me think of...
@brokenwave61256 жыл бұрын
Its flawed because that's nothing like how actual holes work. And using your flawed logic the answer would be 2, not 1. Doors open into 3d spaces, and aren't passages through planes...so that analogy is totally flawed when talking about topology.
@fatherofdragons54776 жыл бұрын
Opening
@melancholyentertainment6 жыл бұрын
Exactly. A straw is 2 holes with a tunnel in between. Like a hallway with one doorway at each end.
@2009priyesh2 жыл бұрын
I am not a math person, but for me a straw is made rolling up a rectangular sheet of paper or plastic, and since that sheet has no holes, straw too have no holes. Another way I think from your explanation is since you put a circle having a hole and then extended it to its length it's like putting n number of circles attached to each other so that they can form a length of the straw, which means there are more than one hole and it varies depending on the length of the straw. I don't know if I am correct, i don't know if any one have same thoughts but I think it's worth posting.
@person77803 жыл бұрын
txt brought me here
@migenpeposhi68813 жыл бұрын
Me too! 🤣🤣🤣🤣🤣
@dinathapa50543 жыл бұрын
Me too 🤣🤣
@yourmom13893 жыл бұрын
LMFAOOOOOOOOOOO
@graygraygray44543 жыл бұрын
cooks
@nikos-stam4 жыл бұрын
My first thought was that the answer depends on the definition of what we actually call a "hole". Starting from the one-dimension space a "hole" could be defined as a discontinued object, a gap of a line. In the 2D space, a hole can be easier identified, since we're more familiar with it. Well, a hole in the 2D space could be defined, as before, as a lack of space INSIDE a 2D object. For instance, think o a piece of paper with a hole in the middle. You wouldn't call it a "hole" if a piece of this paper was missing from the edges, right? Staying in the same line, a hole in a 3D object would be a lack of material INSIDE a solid 3D object. Otherwise, a hole could be a called a bubble in the cake, or INSIDE a piece of cheese. So from this point of view, a straw could have a hole if there was a discontinuity in its material or a "bubble" inside it. Therefore I assume that a usable straw has no holes or else you wouldn't be able to use it.
@ojasdeshpande72962 жыл бұрын
Is that your name or you've just typed math symbols there 🤔
@ojasdeshpande72962 жыл бұрын
oof it's and old comment not sure if you're alive
@muhammadjalal23356 ай бұрын
Yo
@Akosa1176 жыл бұрын
There is no correct answer. This is all based on opinion. Depending on how you specifically believe a straw should look with no holes. If a holeless straw is hollow than it has two, if it's solid it has one. If staws are already holeless than it has zero.
@progenderrole13293 жыл бұрын
It's either 1 really thick CD hole or a skinny sphere with 2 piercing holes.
@EvilTermite2 жыл бұрын
I got it right. My thinking was this: If I have a board and drill a hole in it that goes all the way through, then it has "one hole". A straw is the same as a cylinder with a single hole drilled into it, so it has 1 hole.