Quote:
Originally Posted by Witty
@ uh-oh
What change necessitated walking on back legs?
I'm still none the wiser as to why that happened. |
there are a few reasons thrown about. one being that it uses less energy. humans evolved in the plains of the savannah, where chimps and gorillas are forest/jungle dwellers, its advantageous for them to move about on all fours simply because of the terrain itself, try and trip something walking on four legs for example lol.
this is all theory though. but yea another factor bounced around is the fact that you can see farther standing on two legs, and in the plains of the savanah this is very advantageous if theres a saber tooth or a lion or something you can be alerted faster. like think of meerkats and shit. so being constantly on the lookout, combined with less energy being used (which is debateable, they studied it on chimps but it was even. some used more, some used less, which also can be used to prove the selectiveness of evolution in general, those who used less energy on 2 legs could be more likely to breed and pass on the trait)
but yea from spotting predators, to energy use basically is what i buy into the most. other theories were we learned to use tools so we needed to free up our hands.
i personally believe its the opposite, us having free hands led to us making tools and etc, not the other way around.
but word from there we supposedly lost our fur and were able to sweat to keep ourselves cool in the plains
i just buy into the energy saving thing because to this day there are men who RUN ANIMALS TO DEATH
so us having the endurance and the ability to see farther, led us to not only detect threats, but keep shit we're after on the horizon, chasing down dumbass deers and shit that get tired and die before we do
but yea it was basically an energy and lookout thing
you'll find a billion explanations online tho because no one knows for sure