Falling forward – a reflection on evolution
The other day, I was listening to a radio programme about the deficiency of our basic design. “Our” in this case being us humans. It seems that the biped descendant of those very ancient primates that is modern human has as yet to fully master the challenge of walking without falling over.
Research has been conducted on young healthy people and their walking mishaps (the scientists have given up on the rest of us, unstable wrecks that we are). Turns out that even these prime specimens have a tendency to fall over. More than 50% report falling over on a regular basis – mostly due to stumbling over their own feet. Note that the participants were all sober, and the falling over incidents were not restricted to midnight walks through forests. Nope. Bright daylight, even ground beneath, and still our young and healthy representatives fell. A lot.
Maybe it’s not the two legs that’s the problem. Maybe it’s our feet. Maybe we, as a species, have been burdened with feet that stick out too much. The scientists disagree. There’s nothing wrong with our feet, they say. Instead, our overall stability would have been much, much better had we continued to walk on all four, dragging our knuckles along the ground. Not exactly a surprising conclusion.
Thing is, had we not dared to let go of the ground and rise on our (then) hind legs, we might have been less prone to falling, but we would also have been much, much dumber than we are today. Once primitive man lifted his eyes off the ground to view the world at large, to stare at the moon and stars above, something began happening in his brain, further stimulated by the fact that now that he wasn’t walking on his hands, he could use them for other things. Like making rudimentary tools. Or picking fruits and berries. (Or lice. Plenty of lice to pick off our ancient ancestors’ hairy frames)
Obviously, Homo Erectus was not aware of the “small step for man, huge leap for mankind” he represented. Here was a hirsute creature, standing on his two feet and regarding his surroundings from a sufficient height to discover threats before they discovered him – a good thing, seeing as our ancient forebears had little with which to defend themselves against, f.ex, a hungry leopard. I’m guessing this is where the tool development took off. Hungry leopard drops down on biped. Biped falls to the ground. Long fingers find purchase round a rock. Biped frantically hits hungry leopard over the head with rock. Leopard very surprised, lets go. Biped lives to see another day. Phew.
From rock to bash leopard with, progress was probably quick, all the way to that day when a very thin, very sharp sliver of flint was used to do some basic hair removal. “Oooo! Look at my legs,” cooed Mrs Homo Erectus, “all smooth and unhairy.” (I’m not sure we should be grateful to her, BTW) Somewhat more seriously, making tools had a huge impact on our intellectual capacity. It requires intelligence to fashion a lump of rock into something – specifically, it requires a vision, the capacity to see what it will be once it is done.
Our tool-making forefather had thereby moved into the realm of conceptual thinking. Once you can look at an unshaped lump of rock and think “hmm, that would make a great hand-axe. All I need is to chip a bit here, and there, and then…” the step towards considering the future, where we might come from and where we might end up, is not that big. Yes, Homo Erectus may have been a bit unsteady on the ground, but his brain was expanding at an impressive speed.
So when next you stumble over your own two feet (and no, it’s not the feet’s fault: that has been scientifically proven) remember that this is the very, very small price you pay for being able to crane your head back to look at the night sky and wonder about life on Mars. Or listen to a Beethoven symphony. Or lose ourselves in art by men like Blakelock and Coulson. Mind you, Homo Erectus would probably not have appreciated the art. Or the music. And he had never heard of Mars. But he was thrilled to bits at having survived that leopard attack!