Hello everyone! I am back from a 2+year comment hiatus and excited to say hi! (my account wasn't linked with any google+ account, so I couldn't comment on KZfaq from the MinutePhysics account for the last 2-3 years; google finally gave up on google+ enough that now I can comment on KZfaq again!!)

(Ten) MinutePhysics

Heisenberg was stopped by the police. The officer asked "Do you know how fast you were going?" Heisenberg responds "No, but I knew EXACTLY where I was."

Noobs all you need to do is Ctrl + C and Ctrl + V

My cloning machine searches the universe for a perfect clone, and teleports it to the user.

I was gonna make a joke about cloning, but someone might copy it. Edit: Why did I think this was funny? Its legit a facebook level joke

i once interfered with myself and left a nice pattern on the wall

Object a = new Object(); Object b = a.clone(); Ha!!

ngl fam, totally read "no clothing theorem"

Very mixed feelings in re to format length. Longer and more in depth is great. But I would hate to lose the shorter format that really made your brand. They both serve a purpose. Two channels is probably not a good solution, especially from a business perspective. Perhaps clearly mark each format, perhaps not just by name, (ten minute physics works), but by some distinctive visual clue. This works on other channels that have multiple formats. People can readily pick out the series they want. You can keep separate playlists for those checking out your back catalogue.

people that are interested in what you have to say most likely have an attention span that is

Why are you putting a box of unstable gunpowder that may or may not explode at any moment through a cloning machine?

0:29 "There are a few too many atoms of carbon-14 in the new canvas." I loved that one! 😂

1:22 "The universe is a party pooper, and perfect cloning is impossible." So, the universe says: No cloning around!

I love this video style! It makes things so much more intuitive. I hope you continue uploading such videos

Hi, something seems off about the proof in the video - at the start you said that there are 3 things needed for cloning: 1) the original object (O) 2) the materials that comprise the object (M) 3) cloning process (C) But the proof only considers O and C (as a function of O), while it should be O, M and C (as a function of O and M). Cloning shouldn't be C(O)=OxO but C(OxM)=OxO. If O exists in superposition as O1+O2 then cloning would be C((O1+O2)xM)=(O1+O2)x(O1+O2). We then need to examine the cloning process for O1 and O2, however the materials needed for cloning O1, O2 and O might be different. Let's say M1 is the materials for cloning O1 and M2 is the materials for cloning O2, so the materials needed for cloning O=O1+O2 are M=M1+M2. C(O1xM1)=O1xO1,C(O2xM2)=O2xO2 O1xO1+O2xO2+O1xO2+O2xO1=(O1+O2)x(O1+O2)=OxO=C(OxM)=C((O1+O2)x(M1+M2))=C(O1xM1)+C(O1xM2)+C(O2xM1)+C(O2xM2)=O1xO1+O2xO2+C(O1xM2)+C(O2xM1) So the process could exist so long as O1xO2+O2xO1=C(O1xM2)+C(O2xM1). Consider for example the trivial solution where M=O and cloning is an empty action. PS - great videos, learned a lot from them.

I wouldn't mind a hourphysics video!

I am in a superposition of both liking these videos and really liking these videos.

Extremely clear and positive! Very good explanation of concepts with very simple mathematical derivations. It leaves several points worth discussing further, but that might be a debate for another day. Thanks a lot for this video and for your channel!

Well there's goes my only chance I get to a friend

So it IS feasibly possible for two things in the universe to be exactly the same, just not for us to make exact copies of something that there's only one of in existence. This brings to light an interesting concept concerning consciousness. Suppose that the universe is spatially infinite. Also, suppose that the number of types of particles that exist in the universe is finite. On top of that, assume that there's only a certain number of ways to arrange those particles that complies with known physical law, and that those particles can only exist in a finite number of states. As such, if space is infinite, that would mean that, if you go far enough in any direction, you'll eventually run across an exact copy of the place you just left. So, if you left earth, then eventually you'd run across an exact replica of earth. Down to the people on it. Down to the arrangement of the neurons in those peoples' brains. Down to the properties of the sodium and potassium ions in those brains. And not only would there be one exact copy. If space were infinite, there would be an infinite number of exact copies. Now, as far as we know of today, there is no mystical aspect of consciousness that determines its properties. You are you simply because your brain is arranged a certain way, and your neurons are firing in a particular pattern that is unique to you. But here's the catch - if there were to exist an exact copy of you, down to the position of the neurons and the arrangement of the neural activity, then which "you" would you be? Which head would you reside in? What would differentiate your mind from the mind of the other you? Assuming that they truly were an exact copy, then nothing at all would differentiate the two of you. Now, if you two were to be in the same location and interacting with each other, then it could be determined which "you" was you, as the very act of interacting would break the symmetry. The other "you" would respond to your gestures, therefore altering his neural state in a way that's unique from yours. But, if the two of you were to forever remain isolated in your little bubbles, then you could conceivably reside in both heads at once. And, if there's an infinite number of "you's" out there, then you'd reside in all of their heads at once. And, since they'd all be exact copies, then they'd all be experiencing and doing the same thing simultaneously. So there wouldn't be any way for you to differentiate between the copies. In short, your mind could be simultaneously existing in an infinite number of locations at once. You simply don't know because each location is an exact copy of the other, so you get the exact same sensory input and experience the exact same responses to that input at every location. What's more, let's assume that every copy of you suddenly became curious and said "I want to find this supposed replica-world." Afterwards, they all set out in their collective high-tech spacecraft in a random direction, intent on traveling until they run across the replica-earth. Now, let's say that after an arbitrarily long amount of time (assuming that you could somehow do it before the universe suffered heat death) you finally run across this replica world. Here's the kicker. The "you" of this world would've left long ago, at the exact moment YOU decided to leave, in search of this mysterious "replica-world" he thought of. That means that, from the perspective of the people that inhabit that world, "you" set off in one direction, bound for a replica-world, but instead simply returned to your own world, coming from the opposite direction. From their perspective, you simply would've circled the entire universe, then come back around. And the crazy thing is that, from your perspective, this would be a perfectly reasonable explanation as well, as you'd never run in to any copy of you, and there would be no way of differentiating the earth you find from the earth you left behind. Similarly, a copy of you would show up on the earth you left, which the people on that world would assume was you after having circled the entire universe. So is there really any difference between a universe with an infinite number of "you"s and "earth"s, and a universe that curves in on itself?

The long format is really good. CGP Grey +

OMG ! I just loved how creatively you explained one of the most confusing things ever and made it look so look!! looking forward for more such videos

You draw well ! And so your explainations are so cool and understandable 👌🏼 Thank you !

I liked the CGP Grey reference.

10 minutes of Minute Physics, hell yeah!

Neat! I re-found your channel after rewatching the video you did with Hank Green, so youtube started suggesting you again. I loved the fact that you brought up (star trek!! :D) teleporters, because that's exactly where my brain was when I was watching the rest of the video.

for some reason I readed 'the no cleaning' theorem and came here expecting a excuse to give to my mom

My brain just exploded plus not exploded = exploded² + not exploded² = A²+2AB+B²

Really love this more in depth video :)

This video is brilliant! perfect illustrations to get insights on eigenvalues and eiegenstates in ket notation 👌 Longer videos are the way to go!!!

A great video, while keeping it simple, staying informative. Great job man! I really enjoyed it. Please consider more quantum mechanics based videos. Thank you

A 10 minute video! What is this? Christmas?

"I'm trying a new format" a.k.a. KZfaq formula forcing content creators to make a video 10 minutes long.

I liked this video a lot the ad is placed right and it was worth to put my time watching it. great job I hope the up coming videos are as great as this one did

I really appreciate the way of explanation on this channel. Got to learn a lot from here.. thanks!

10minutesphysics*

Am I the only one who likes to pretend that I understand what these kinds of video are really about?

This is the best video I have seen ever!!!!!! All the conepts are made clear along with the basics needed to understand that concept. Please make more !!!!!

Daim you explain such complex topic so easy to follow and get the gist of

This is one of my favourite videos you've done!! A ton of clear and logical explanation that is also relatable. I'm so up for more like this. Thanks!!

Love the longer videos!

Psh, you just need a Heisenberg compensator

I've only studied physics through highschool but i've always been interested in the whole magic of it and this channel is the only place i can get my share of mind blowing physics pieces that are actually fun. Keep up the great work. I absolutely love the videos ❤ And it didn't feel longer at all.

Likely my favorite MinutePhysics video so far. It's in depth enough for me to feel that I fully grasp the topic, but not swallowing over half an hour of my time. Great work!

Great content - really inspiring me to learn more about science, as well as inspiring ideas for my sci-fi fiction

10-15 minutes videos is perfect, but rather shorter than longer, because you have topics that demands attention all the way through the video! Really liked it the length of this video, Keep going with that 😉

longer videos = more money for u + more time to learn(for us viewers)so... everybody wins!

and even if this cloning was possible, one second later, both the clone and the original would be exposed to different stimuli, this would make them diverge.

It was a great video, long format also good! Keep it up :)

Love the longer format!

I really enjoy the longer format videos. Been watching for years. You can get in way more depth and i don't feel like it takes away what you were originally trying to do with the channel. Like you said, Minute Physics was meant to signify a video on the magnitude from 1 to 10 minutes

Henry has discovered the KZfaq algorithm.

Henry. I love your videos. Keep doin' what you do.

Man, you are just amazing at explaining! Thank you for showing that my teleportation efforts won't be wasted. Please, give us more!

u know something is confusing when u hear quantum.

Thank you so much! I did not get the explanation when I first read it on my textbook but now I've got a clearer picture

Great Video! The explanation was clear and in depth!

That would be funny if the matrix exists and we're trying to make sense of physics when that's not even the real physics. Then we wake up and everything is fucked up and doesn't make sense to us because the rules of everything fundamental that we know are different. o_O

I like how you used CGP Grey's Icon when talking about an ideal future.

Great video and well explained! I did have to slow it down some to follow at a good pace.

I liked that CGP Grey plug haha. Mind stretching videos. Enjoyed per usual. :)

Finally a minute physic video where I knew the concept before the video, now I can die in peace. Also 10-15 min video > short video and

Soo, if a teleporter breaks my atoms down and reassembles me it actually will still be my own conscious self on the destination, and not just a clone with the exact same personality?

your KZfaq channel is very good i can understand everything and everything is accurately true

"more perfecter" -Henry Reich

I like the longer format. Please do more of them.

MinutePhysics is becoming HourPhysics.

Really, it's clarity of explanatin that's more imprtant than 'proper time' video length. So a longer video, with the same clarityh as you give, would be ... more infrmative! Thhis is a Good Thing!

TIL: I am a superposition of knowing what the hell you’re talking about and not knowing what the hell you’re talking about.

I am happy as long as we can still teleport stuff.

that feeling when people think that Schrodingers Cat wasnt a joke, and that things can be in multiple states at once - when the fact is they cant - we just arent capable of knowing which state they are in until we measure them and determine which state they are in , so we have to make the assumption prior to measuring that they could be in either state and so must assume it could be both. My face when people will try to say I am wrong because they have a shirt with a picture of a cat that is alive and dead on it - and dont actually understand what I am saying.

I did very much enjoy this video. Would love to see more

That was amazing. Of course, watching this video might be just a scratch on real understanding of no cloning theorem, but it was very carefully explained.

minute physics was about taking something complex and making it bite sized and easy to understand. 10 minutes of super positions, quantum mechanics, uncertainty principles etc might just be too much

Wow, a 10-min video?! It is like it's Christmas again!

great video! love the videos about quantum mechanics!

I love the detail!!! Thank you!

What if the act of cloning is equivalent to an act of observation, which causes the superposition/wave function to collapse to a single state?

Love this in depth explanation man definitely keeping this as a reference for the future

9:26rip stickman-clone pixelated to death.

7:42 Look-It! CGPgrey! Two of my favorite explanatory YT channels in one place. Get Fact Fiend here, that’d be all three...

Love the longer format (and the sly CGPGrey reference)!

3Blue1Brown is very underrated

Love your videos. One suggestion. I’m old enough that my hearing isn’t as good as it once was. Background music, especially with higher frequencies and volume, makes it harder to understand what you’re saying. However, I really love the string bass you often use, and it doesn’t interfere with your message.

That's exactly how I would tell! Wow, I'm impressed by level of exactliness!

The long format is really good, the short ones seemed rushed anyways

Really appreciate your using Dirac notation and using actual mathematical theorems in the video :) Makes it more accurate while still accessible.

It’s 10^100^100 % ok to have longer videos Do keep them coming 👍

I'm suddenly reminded of Terry Pratchett's "Going Postal" which had the mail sorting engine that tapped into the space-time continuum and emitted mail from the future, mail from alternate universes, and notes people swore they had written and posted but never did.

Great! I really liked this long format video!

I was gonna make a joke about cloning, but someone might copy it.

Love this video... yes you should do more like this one!!!

I like the long video, I’m hyped for that conscious video too now xd

im not afraid to admit that this went over my head... maybe it's because i havent had coffee yet. lol

I liked the mathematical explanation part . Keep it up! MinutePhysics Rox!

I honestly thought this video was only one minute long when I got to the end. Well done.

I love how this principle neatly solves the problem of teleportation that says, if teleportation involves copying you and placing that copy in some destination then the destination you is only a copy. And what's more, you could leave the original behind and not destroy it meaning there's 2 of you. So which is the real one. This principle says that that's not possible and that whichever one is identical at the quantum level to you before the teleportation is the real one.

I definetly vote for the LONGER videos!!!

That moment when you thought you were good at maths, lmao no