One thing I used to mistakenly believe was that evolution is a tendency towards perfection. I thought that after millions and billions of generations, humans would become 'superhumans' who are virtually superior than the current human being in almost every respect. However, it turns out that evolution is simply a gradual process of 'adaptation' to a particular environment. This in fact signifies a very uncomfortable fact that the byproducts of natural selection which human beings possess and demonstrate today can all go to waste when the environment drastically change. Adaptation is merely a relative concept, and it is therefore futile to even define what's 'superior' or 'inferior' in a long term.
Also, I realized that human beings are by no means even close to perfect even after undergoing millions of years of evolution. One interesting imperfection is the human eye.
(Source: theamazingeye.wordpress.com)
In human eye, the nerve fibers route
before the retina, blocking some light and creating a blind spot where the fibers pass through the retina and out of the eye (Wikipedia s.v. blind spot). If evolution is a tendency towards perfection, the species with nerve fibers routed behind the retina should only have survived, passing its heritable traits to its descents.
댓글 없음:
댓글 쓰기