Comment by eternalban

The human body is a very complex system. It's an incredibly complex system with 30 trillion moving parts (cells). And it doesn't stop there. Layer upon layer of abstraction culminating in organs, sub-systems (cardio, nervous, GI, ..), and finally a thinking hairy biped. It operates in a hostile environment subject to ceaseless assault by germs, viruses, and other organisms. Complexity clearly can not be the issue, otherwise evolution would favor simpler organism, but we're the ones lording it over simpler systems.

I think our design thinking is lagging. We need to work on that front.