I have a general distaste for scientific theories that are, for lack of a better term, light and fluffy. Theories that have a handy way of making humanity unaccountable for it’s inability to deal with it’s own primal (and somewhat nefarious) urges and ,instead, placing the blame squarely on some some faceless source or overseer, like Mother Nature, God, or some other bit of nonsense.
My real beef, you ask?
The majority of scientists involved with evolutionary psychology (EP) seem to be taking this “happy go lucky” approach as of late. Evolutionary Psychologists tend to think that, since natural selection is a hill climbing process, it tends to choose the best of the variant designs that appear over the course of time. Because, since there are always seemingly massive amounts of genetic diversity to choose from, natural selection tends to cause the accumulation of optimally engineered functional designs (thank you, Gary Marcus).
Every question that is put forward to EP is explained away with how it would have been optimal for our ancestors to be constructed in that particular away (for instance, why men tend to be more sexually promiscuous then women). They claim that every flaw we can point out in humanity’s character is due to the fact that some particular design was, at one time, perfect.Scientists have confused the idea that evolution CAN optimize things (such as our eyeball being able to recognize a single photon of light in a darkened room) with the idea that evolution will ALWAYS optimize things (for instance, we have blind spots in both of our eyes due to our retinas being backwards).
They leave no leeway for the possibility that maybe; needless imperfections remained because nothing better could be designed off of the original hardware. The crutch of evolution is that it has to build on what was previously there, with no regard to the most advantageous designs that theoretically could be formed if it could simply scrap what it what was working on and start over from scratch.Take, for instance, the spine. 70% of our weight is supported by a single column when, as any undergraduate architect could tell you, a more secure design would be one in which where our back was made of four spinal columns that helped to distribute the weight evenly. Why didn’t evolution come up with this? Because it had to work with the fact that we evolved from four legged animals who had no use for an extravagant spinal configurations.
Natural selection is not a perfect process. It is a blind driving force that, although it leads populations of creatures to become more adapted to their surroundings, is vulnerable to getting stuck on the “good enough” rather than on the perfect. Natural selection commonly makes it only to what mathematicians call, the local maximum.Natural selection, in essence, chooses the path of least resistance.EP seems to believe that our minds are an elegant yet ancient contraption, upholding the Aristotelian idea that “man is the rational animal.” But when you get right down to it, from an engineering perspective, the design of the human mind (and for the matter the human body) is a bit of mess.
(Click)