Since a few generation, it was noticed that we tend to grow less wisdom teeth. I had only three; some have two, one, or even none at all. <img src="/ubbthreads/images/graemlins/confused.gif" alt="" />
It could also be a form of adaptation: we keep pulling them out (so many people seem to need to get that done nowadays), so our decendents's genes sorta catch onto that and say "screw that, I don't want those if I gotta have'em yanked out!"
Seriously though, its like with all living things. Creatures that tried to move out of water, slowly over time (millions of years <img src="/ubbthreads/images/graemlins/winkwink.gif" alt="" /> ) adapted themselves to life on the land. Bacterias and insects are always finding ways to up their immunities against vaccines and sprays. Heck, even we are building immunities against some of the older desieses (long time ago, flu=death; now, flu=maybe-death/mostly-nasty-cold).
So, back to the teeth. If we keep removing the wisdom teeth, we evolutionarily adapt to not having them, thus geneticaly our offspring are also adapted to this and the amount of these teeth is slowly deminishing.
I should have grown up to be a scientist. <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />
I just love making my crazy theories. <img src="/ubbthreads/images/graemlins/delight.gif" alt="" />
Killerzzz
