We don't have to imagine it...just go to Wal-Mart and behold!
The genes that are selected "for" these days, belong in large percentage to the unfit.
Actually, whoever is reproducing more than us is more "fit", according to the evolutionary theory's definition of the word "fit" and "fitness". I truly hate that Spencer coined the phrase "survival of the fittest". So, take me-a bodybuilder with no children-versus an obese woman with 3 children, the obese woman has greater "fitness" than me, simply due to the fact that she has greater reproductive success in her given environment than me.
Meh, guess I'm being too anal with words; I just don't want anyone to confuse the words "fit" or "fitness" when talking about evolution.
And not just physically. I mean, people of below average intelligence, unable to take care of themselves, financially unstable, non-producers. They just breed and breed. There is no limiting Gene there.
Actually, natural selection still works there. The aforementioned example, an obese woman, would be very "Fit" individually, or have high individual "fitness", but low inclusive "fitness" according to my previous example.
Let me explain. Sure, the obese woman reproduces and is more "fit" than me due to me not having a child versus her three. Now the woman's given environment, as is with most uneducated, financially unstable-riddled environments, is surely riddled with drugs, lack of financing, crime, et cetera.
The woman's inclusive fitness is going to be very low because that is a harsh environment to propogate in, so there is no need to worry about her offspring making more offpsring and so on and so forth. Thus, a low inclusive fitness for the woman, and me coming ahead even though I have a child later in life.
On the other hand, getting educated, financially stable, and experienced enough to raise kids well and responsibly takes time. These folks breed later and only as many offspring as they can care for. The "fit" are losing the gene battle.
No losing here, as aforementioned. Even though you have low clasical "fitness" compared to the "less blessed" individuals, you'll still up with a high inclusive fitness. Also, I bet you would have a greater indirect fitness gain simply due to kin selection, which individual altruism and sacrifice isn't as present in the Wal-Mart lady's environments.
Hopefully that'll quell your fears about a bastardized Wal-Mart infestation (and stop reading eugenics books
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