Originally Posted by ebaines
It is indeed interesting to contemplate whether man will continue to evolve, and if so, in what way? The theory of evolution is all about "survival of the fittest" - that is, those individual creatures who have a particular modification in their genes that give them an advantage in surviving long enough to have more babies than the other creatures will have a better chance of passing their genes on to subsequent generations. For animals this typically means that those who are better able to out-run predators, or who are better able to find food, or who are better able to survive the elements, or who ar more disease-resistant, will tend to have more babies than those who aren't, and so their positive traits are passed on.
But for modern humans our ability to survive to the age of 20 or 30 and have babies has little to do with these things any more. Consequently the tendency for "strong" traits to be passed on over "weak" ones in humans in the future will be tremendously diminished. For example, diabetics who used to not survive past childhood can now live to have plenty of children with the help of modern medicine. Consequently we may find the percentage of people who have diabetes increasing over time. Same thing with asthma. The leading cause of death among teenagers is accidents - so perhaps those who are most daring (careless?) will have fewer babies. Put all this together and it may be that the human race could become a bunch of sickly wimps!