good theory! but personally i think it had to do with price increases in gloves! that's why the thumbs on the feet got reduced so we could wear shoes instead. --> money saved! :P

However, most people move on four wheels. And what about unicycles?

@@ph2738 good point, it's why professional pedalologists suggest that future speciation events within what is now one species, Sapiens, might lead to monopeds (Homo Singlelegiensis) because of the biological necessity to have the number of legs match the number of wheels (known as the leg-to-wheel-ratio-1-law). no serious scientist however believes that humans will become quadropeds, since most four wheeled vehicles are mostly automatic, that's biologically completely different, obviously :P

the opposable thumb being necessary for ringing the bell proves this.

"If the Good Lord Intended Us to walk, He Wouldn't Have Invented Roller Skates." -William Wonka

*Looks at the creationists* Um.. they are saying "you believe we came from a rock"

@@aralornwolf3140 - Ah, yes. They sometimes claim that atheists / evolutionist think "we evolved from rocks".

Same But my fingers start hurting after

@PurpleRhymesWithOrange - I once saw a documentary called "The Family That Walks On All Fours", about a rural Turkish family with members who ambulated on all fours in a 'bear crawl' - soles of feet and palms of hands. It was determined that they have some non-progressive genetic brain impairments that interfered with balance. Once they came to light, they were provided with parallel bars and physical therapy instruction, following which at least one member was able to begin bipedal walking.

That sounds fun! It's also probably faster than running on two legs too.

@@Dekubud It's quick over short distances, like 20 feet, but I wouldn't be eager to run a mile that way.

But you _can_ walk on your hands! That does work!

I've tried tripedal and I just don't think it'll ever catch on.

@@KaiHenningsen oh no! I can't even do a headstand, let alone a handstand! If this catches on I'll have to be the weirdo who remains on legs. I can walk on my hands underwater though... ::imagines what it feels like breathing through gills:: Yeah, if I get me some gills then this could work out! And it would be fun to be an upside-down mermaid! Merman? Mer...person? Hm. Nah, I think any ocean living person should be called a mermaid. I'll have to form a naming committee to hash out the details of our nomenclature.

The only logical progression that would allow head-walking would be a radical change in the structure of our ears. The intermediate steps in this process would be an interesting exercise in hypothetical thinking.

@@barrylangille3523 That is such a cursed image!! hahaha

Congrats! 👍

Glad that you got out of that rabbit hole. Welcome to reality.

I hope you’re feeling alright, though. It can be difficult shifting to a new worldview because you feel sort of hollow. It’s a similar feeling when you finish a really good TV show and think “what now?”

@@sporovid5856 That’s definitely true. I’m currently studying paleoanthropology and am working at a great museum teaching others about human evolution, but coming from a heavily Christian family with a very creationist father that transition was very tough and it gave me some pretty great mental health issues due to all the criticism and the idea that everything I was raised to believe was wrong. It’s been a while since that but I still have some struggles, but I’m doing much better and I’ve been trying my best to help those in similar situations. It sure can be hard.

​@@cerasinopshodgskissi3817Former YEC? What does that mean, if I may?

😂😂

Aw, in a way that makes me feel bad. It's like the same feeling one gets in crushing the soul of a small child or an animal. Well, unless you're a psychopath or sociopath, I guess, because they either don't care or delight in doing stuff like that. However, it's better to live in reality with regular faith than living in a total fantasy like Young Earth, so sometimes spirits must be depressed in some cases.

" *my Christian family and see them die inside* " Interesting, that it brings you joy... The vast majority of Christians are not creationists, so call your family Creationists, not simply Christians. Anyway, what she proposed here borderlines a miracle. How so? Very simple. She claims there was not a single primary cause of bipedal walking, but a combination of factors. Calling something "a combination" makes sense only if the factors are unrelated. If one primary factor causes a bunch of related events, we wouldn't call it a combination. Say, some chain smoker died of a heart attack, you wouldn't say that he died due to "a combination" of smoking and heart attack, would you? But let's say he was old, then you could say that the heart attack happened because of smoking and age, since smoking does not cause age or the other way around. Those two factors are unrelated, so it's a combination all right. Thus, she claim that a bunch of unrelated factors contributed in various ways to bipedalism. The problem is, that the probability of unrelated events happening together is the mathematical product of the probability of each single event. You start multiplying those, you arrive at microscopically small resulting probability, which commonly would be referred to as *a miracle* if it every happened. Show that to your Creationist family, will you?

@@ChristopherSadlowski Please, don’t feel bad. I was raise in an extreme (hostile) Judeo-Christian environment with no tolerance of others (aka deniers of truth). There was the right way, the LORD’s Way and then the damned. I was constantly ‘corrected’ for bringing up controversial points like why should I ‘smite’ the ‘wicked’ to preserve the Lords way, when these people are just living a different lifestyle? These digestible clips of logic and reason she posts help me connect with them on their (I’m better than most because I have a college degree) intellectual level to show that their religion is based off tales and legends gathered from the area of origin, no different then other cultures. I am not as educated as they are but I find people who are to help explain why we all can move on from fairytales and work together for each other to help extend our species existence.

@@esthersayers9978 it's not really about who they are rather about who you are. We, skeptics, enlighten, not attack, others.

Yeah when they walk upright and looks so funny with the arms being extremely long.

Me trying not to wake my roommates at 3am.

Deny , deny, They r mongrels, face it,

I hope the replies also count in.

aalgorithm response

Algorithm mic check 🎤: uno, dos, tres

A friend of chimps is my enemy.

@DarthCalculus - Keep fanning that curiosity! (And ignore @MrCmon113.)

"All of the above" answer hypothesis XD

Ive replaced "yelling at lions" to yelling at cicadas in the summer.

It does conserve energy. It's one of the reasons humans have such good stamina.

I won't pretend to be your doctor and if your problems are severe you should absolutely talk to them before trying anything, but I will say that moderate yoga as an exercise (moderate stretching plus using holding up your body weight in different positions as a form of lifting plus balancing) can be excellent at strengthening the small supportive muscles that often atrophy in bad posture or when favoring certain body parts that hurt (as in my case happened from developing a bad gait from wearing bad shoes that caused me pain in everything from the soles of my feet to my mid back) but which are critical in holding yourself up in a way that doesn't strain your joints and depending on the cause of your pain can work wonders. If you're familiar with weight lifting at all, it's very similar to the difference between how free weights train small muscles that weight machines miss, just in this case the free weight is your own body and the exercise is largely static instead of largely dynamic. A good yoga instruction will focus at least significantly on it being another form of exercise and possibly simple meditation for those that want to mix them (rather than trying getting highly mystical about anything) and actively encourage you to modify positions which are either too easy or too hard for you and tell you to stop if there is any pain. Not a doctor or physical therapist or anything and I don't know your specific situation, so take all of that with a _massive_ pinch of salt, though...except for the bit about avoiding bad yoga classes. Just because yoga is good for people doesn't mean there aren't bad ways to do it just like anything else.

That's due to your bad health. A healthy human has an easier time traversing long distances than other apes. That's one of the advantages of bipedalism.

Talking about 'professor' dave?

Like an Elephant Horse or a Dog walks on two legs to get water and have a dump ??

As myself, being a modern ape that daily “stands up” to go use the bathroom… I agree 👍

@WayneBraack - I think Ms Gibbon has it slowed down. Try speeding it up some; maybe it will help.

Why are Humans Bipedal? Actual answer if we were being honest: We haven't the slightest idea.

Although there were several factors that led to bipedalism in hominids; the rising of the land mass of East Africa, which led to the spread of the Savannah, and physical evolution itself, as we moved further away from our primate ancestors, I believe that the deciding factor, the one that provided that final push, was the sudden and shocking onset of self consciousness. The emergence of the human intellect and spirit from the animal realm. Descartes' "I think, therefore, I AM."

@@hot656moo658 Human bipedalism emerged a million years before expanded brain capacity. It is like no other bipedalism in the world. It makes us unstable and slow and it was that way long before we could take advantage of it for persistence hunting.

It is much easier to use weaponry ⚔🪨🩼🍳🏹 to kill things when bipedal.

Pffft. We used to use fingers and toes and were twice as productive, but you finger pushers just had to have your shoes.

It's true! In fact, the automobile brake wasn't invented until 1895. Before this, someone had to remain in the car at all times, driving in circles until passengers returned from their errands.

@@firstnamelastname9918 I had a car like that once.

Germans, for example, still have Handschuhen.

@@archivist17 Sorry for nitpicking, but the plural of Handschuh (hand shoe) is "Handschuhe", without the "n"

You feeling a little better now, or do you still have the bad day lingering?

Actually we didn't eat any of that stuff until very recently (c. 10-15k years). Raw grass seeds will make you very sick if you try to eat them. It is only when they are soaked, sprouted, ground, cooked, and otherwise processed that they are even edible by us. What we started eating when we came down out of the trees is meat perhaps starting with carrion and later developing hunting.

@@robinbeers6689 and yet there are primates that live on grass. Our digestive systems have changed with our diets over the millions of years that have passed.

@@aikiwolfie We share a common ancestor with them. We are not descended from them.

@@robinbeers6689 indeed. When did primates start eating grasses? When did humans start eating grasses?

@@aikiwolfie Humans don't eat grasses. There are very few wild plants that are edible by us without cooking, mostly some roots and fruits. Most of the produce aisle at Whole Foods is stuff we created very recently. There is no such thing as wild broccoli. It is a human engineered derivative of the wild mustard plant as is the entire cruciferous section of the produce aisle. The fruits we have have been engineered to be more sugary and less fibrous (ever seen a wild banana?). The tubers have been engineered to be less fibrous and more starchy. Just in terms of calories, wild plants are not really worth gathering and eating unless you are seriously hungry. They were the plan B option if the hunt went badly.

Both dates can be correct in a sense, once one realizes that the 100k - 150k is not the age of our species but a ballpark estimate of when "Mitochondrial Eve", the last woman ancestor of all of us, is believed to have lived. There are many fossils of Homo sapiens older than that.

@daver. - Ms Gibbon has a video on cooking.

Non-ape monkeys also walk bipedally when they're trying to carry a bunch of fruit at once

That is one change I really would like to know the pressures and actual changes of along the way. There are a whole host of mutations that would need to happen (and I am not sure if they have to be linear or if they could have been spread out.) For example: the socket is smaller in humans and the muscles are weaker in humans (not as much swinging from branch to branch). Could one ancestor have had the weaker rotator cuff, and another a moderately smaller socket, and then when their descendants mated they passed along both traits to the offspring and now you had a (comparatively) super thrower? Or was it one, then another a few generations later, and now great thrower?

@@bludfyre If more accurate throwing led to eating better, there would be genetic pressure rewarding it. In order for us to throw accurately, we need our solid bipedal stance. You don't need to be fully bipedal to throw something, but if you find a way to make a living by throwing things effectively, morphology will follow by building a better platform.

Agree.I wonder if advanced thought development was just as significant as learning to control fire in terms of dealing with larger toothy competitors.

So people tried to teach other apes how to throw stuff and they couldn't?

It took until I was in my mid-twenties when I learned of the indris of Madagascar, who live in forests and are the largest living lemurs. They are even more bipedal than we are, with arms only about half as long as their legs. For more about them, see my comment (not a reply to anyone unless you count the author) that I did a little over an hour ago. Comments have been coming in very slowly this past week, so if you Sort by Newest First, I should be easy to find.

Except early bipedalism was primitive, knuckle walkers faster, and bipedalism started in arboreal apes