Apparently people can't seem to understand that evolution takes its way not based on necessarily the preservation of one species, but mainly on needs and conditions. Do keep in mind that there are more than one "species" of humans (call them sub-species, or races, if you like).
Well, it takes its way based on conditions. And what other species or sub-species are you talking about? There is only one species of humans alive today.
How I see this matter is: presuming that we have a whole branch of humans based on money, high income and the life according to previous facts, they might end up (after... many years) in a totally different species from the lower-income, agricultural type of humans. Sort of the Neanderthal - Cro-Magnon branches...
Please. What are the different habitat types of these different varieties of humans? In what way is agriculture, once it goes beyond subsistance, not like any other business?
They will both be adapted to their condition, and they might both survive, or one of them might die out. They may even end up not being compatible with each other in terms of reproduction.
You're talking about ONE species that is highly adaptable to a variety of situations. Why would barriers to breeding develop? You're talking like there is some isolation of one group from another going on.
