If by evolved we mean survival of the “species,” then are American’s less-evolved than other nations?
Procreation here is less than many other, particularly 3rd world countries. We contracept and even advertise methods in magazines, radio, etc… We abort. Many American men look for consequence-free sex. Porn doesn’t reproduce. Women commit to professional work far more than raising children than in decades past. The Europeans could fall under this umbrella too with the Pope a few years ago urging them to reproduce more.
If you base the success of a species on fecundity, then homo sapiens sapiens is the most successful large mammal. This success is responsible for the largest mass extinction, of non-human animals, since the Cretaceous era.
well.com/~davidu/extinction.html
If you base the success of an individual on fecundity, then Ghengis Khan is the clear winner. But thankfully, with the advent of human culture, we can act contrary to our natural drives
"When we die there are two things we can leave behind us: genes and memes. We were built as gene machines, created to pass on our genes. But that aspect of us will be forgotten in three generations. Your child, even your grandchild, may bear a resemblance to you, perhaps in facial features, in a talent for music, in the colour of her hair. But as each generation passes, the contribution of your genes is halved. It does not take long to reach negligible proportions. Our genes may be immortal but the collection of genes that is any one of us is bound to crumble away. Elizabeth II is a direct descendant of William the Conqueror. Yet it is quite probable that she bears not a single one of the old king’s genes. We should not seek immortality in reproduction.
But if you contribute to the world’s culture, if you have a good idea, compose a tune, invent a sparking plug, write a poem, it may live on, intact, long after your genes have dissolved in the common pool. Socrates may or may not have a gene or two alive in the world today, as G.C. Williams has remarked, but who cares ? The meme-complexes of Socrates, Leonardo, Copernicus and Marconi are still going strong. "
Richard Dawkins -* The Selfish Gene*
rubinghscience.org/memetics/dawkinsmemes.html