> If you didn't get old and die, evolution of your species would grind to a halt. > Getting old and dying is required for evolution to transpire. I don't thin

> If you didn't get old and die, evolution of your species would grind to a halt. > Getting old and dying is required for evolution to transpire. I don't think this is actually the case - only dying is required, not the getting old part. If a lion is still having no trouble catching zebras at 20, why shouldn't he stick around having kids? (The answer is probably something along the lines of "keeping this gene carrier at maximum health is significantly harder than spreading through fresh, if diluted, gene carriers" - though some species do seem to manage agelessness, most intriguingly the naked mole rat)