All other factors except this is just basic stuff.
We (humans) are in fact a complex kind of "fungus" because on a very low level the cells work in the same way like the cells in the "fungus"
That is the same with computers the basic stuff is very basic: "1/0" and some little logic "and/or/not"
But the complexity grow very fast.
Humans hardware is "basic" but the software part of the humans is very complex.
One of the biggest problems of the human race is the unbalanced gift of intelligence of the individuals.
But there is hope for this problem: http://en.wikipedia.org/wiki/Nootropic