[w_alloy]

Technology and world production are both growing much faster than world population. We have no clue how many humans the earth could support in X years. There is a ridiculous amount of unharnessed engergy and unused space out there (the largest state in the US has only half a million people still).

Who knows what technology will bring in the next hundred years. The singularity? Human uploads? Who the F knows. There are a lot of other problems the world will face that will be much worse than overpopulation and a dilution of evolutionary effects.

As far as "evolution" on earth is concerned, I think technology is replacing genetic evolution.