This discussion is old. It's like going back in a time warp. One notable quote that I largely agree with. Let me find it. I must have been busy at the time.
Soren wrote on Nov 25
th, 2012 at 10:39am:
I said no. But that theory isn't any less unbelievable than the notion that the human mind, this most complex and unique thing, came as a result of random permutation of matter in a relative blink of an eye.
You see, the human
brain in its complexity can't be defined in terms of genetic code. I regard the human mind as a property of the human brain. Others can regard it as they see fit.
I think I said earlier that the complexity of the human brain (mind) is programmed into a relatively blank canvas of 200 billion brain cells from the time of birth (which rapidly declines to 100 billion). It's self programmed on the basis of input - input from family, friends, society and curious investigation of the world. Without that input (those nice fuzzy human factors that Soren spoke of- individual human beings and their interactions), there is virtually no innate intelligence.
Those people who are starved of mental stimulation from an early age have a very limited prognosis. We all know this instinctively
The structure of the brain is certainly a prerequisite for that development, but that basic structure has remained essentially the same for hundreds of thousands of years.
What has prompted the (non genetic) "evolution" (creation?) of intelligence/sentience/ the mind is open to conjecture, and some have cited environmental factors, such as living in the constraints of an ice age. It's an interesting question. When did the flame ignite?
Personally, I'd add the development of language to that. I feel that language is the key to intelligence etc. To paraphrase:
In the beginning was the Word, and the Word was with the mind, and the Word was the mind.
Now given that the individual mind relies on the perpetuity of the collective and eternal (αἰώνιον) mind of humanity, it makes a lot of sense.