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Paleontologist: Humans walked on two legs from the beginning


An interview with paleoanthropologist Carol Ward on the difference bipedalism (bipedality) makes:

Tom Garlinghouse: Let’s start with the basics. Will you please explain bipedality in layperson’s terms and why it’s such an important concept in human evolution?

Carol Ward: The way that humans get around the world is different from any other animal on Earth. We move around on the ground, upright on two feet, but in a unique way: with one foot after the other, holding our body fully upright in a characteristic series of motions. This is something that no other primate does, and it seems to be a behavior that was present in some of the earliest members of our branch of the family tree. It represented what was really the initial major adaptive change from any apelike creature that came before us. So it’s a big deal to figure out how and why we walk the way we do, in order to figure out why and how our lineage really diverged so much from apelike creatures. Tom Garlinghouse, “Unraveling the Mystery of Human Bipedality” at Sapiens

Also, Ward tells Garlinghouse: “Brains in early hominins really don’t start to get large until after 2 million years ago, so for the first two-thirds of human evolution, brain size change wasn’t really a major event.”

But brain size is not as important a quality as is often assumed. See Do big brains matter to human intelligence? (We don’t know. Brain research readily dissolves into confusion at that point)

More on bipedality/bipedalism: Researchers: Supernova prompted humans to walk upright Funny, if bipedalism originated in a global catastrophe, that it never occurred to any other primate to resolve the problem by becoming fully bipedal. But keep thinking. Resist groupthink.

Bipedalsm: Regulatory area cent.com/intelligent-design/bipedalism-regulatory-area-missing-in-humans/” target=”another”>missing in humans

Researcher: To Understand Human Bipedalism, Stop Assuming “A Chimpanzee Starting Point”

Rough terrain caused humans to start walking upright

Early bipedalism walked no straight line

We’ve also heard that bipedalism developed so we could hit each other. Or carry infants. Or scarce resources. Or save energy. Or cool down. But mainly so we could have our hands free for whatever. (Saving eneregy and cooling down don’t really count here because lots of other methods would have worked; they just wouldn’t have freed the hands at the same time.)

See also “I’m Walkin’, Yes Indeed I’m Walkin’” But Not Because It’s Necessarily a Better Way to Get Around

Also, Design perspectives and the physiology of walking

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"ROUGH TERRAIN caused humans to start walking upright.... We’ve also heard that bipedalism developed so we could HIT EACH OTHER. Or CARRY INFANTS(but animals seem to get along fine without carrying their infants so....) Or SCARCE RESOURCES. Or SAVE ENERGY. Or COOL DOWN. But mainly SO WE COULD HAVE OUR HANDS FREE for whatever. " All you need to be a good scientist is a good imagination! tjguy
Baby humans are EXCITED about learning to walk. Even during the intermediate Cruising stage (standing upright and holding the edge of the coffee table [all middle class Neanderthal caves had coffee tables. See the authoritative documentary series "The Flintstones".), babies laugh and scream at the sheer JOY of each step. Cuz once you can stand up AND move, you can SEE a whole bunch more stuff that you can then go get (e.g., the teddy bear your big sister insists is HERS). But our baseline design was clearly based on the assumption that we'd be walking upright most of our lives. And of course there's no evidence of a TRANSITION: humans appeared POOF! Our hips and feet were DESIGNED for bipedal walking (and running) POOF! A baby taking her first step is an event as monumental as speaking her first word. We walk, we talk, we send rocketships to Mars. We invented PIZZA for Pete's sake! All because of that amazing million year old design. vmahuna
Where are the intermediate forms? This problem of missing intermediate forms is a problem for Darwinian evolution at so many levels---think of all the various kinds of "explosions" paleontologists now describe. It was a problem even Darwin himself had to deal with [he proposed that before the Cambrian (Silurian to Darwin) there was just as much of a fossil record as since, something he was forced to predict because of the "Cambrian Explosion."] Darwinian evolution is now no more than an empty theory, of little real significance. But don't tell the Darwinists that!! PaV
But didn’t a super nova cause us to walk upright and bipedal AaronS1978

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