Human Evolution (re: If evolved from apes, why still apes?)

I think a very solid proof that we have evolved from a common ancestor will arive the day we realise that not all "humans" can interbreed. We will certainly, eventually, evolve enough that people, for argument's sake, on far sides of the planet to one another could not possibly reproduce, by natural methods anyway, and thus be considered different species. I admit that it will be difficult to realise when this has happened, if it hasn't already.Is every combination of two random people on this earth capable of reproducing?? (excluding people with genetic defects and physiological problems which would prevent them from interbreeding with anyone at all!)Just a thought.Edited by MikeMcC, : Just to clarify a point being made

Thanks for the tips there. I'll try to incorporate them into my ramblings as much as possible.I was wary of someone bringing up the globalisation factor but i decided to omit it simply so as not to sacrifice the clarity of what i was stating and asking. I considered using the extreme example of someone who currently lives in a western, cosmopolitan part of the world, trying to have a child with someone who was brought up in a jungle tribe somewhere and whose previous generations have all come from the same setting. Do you not think that, given enough time, and maintaining these conditions, that these two individuals' succeeding generations would eventually differ so much that they'll no longer be considered of the same species.It's important here, i think, not to have any limit on the time line. Let's not forget that we didnt just occur over a few generations.I understand the relevence of genetic flow in general and in the world as it is today, but in the extreme example above i think it changes considerably.I'm aware that someone is bound to pick a difficulty with my jungle tribe example but it's the better of two i could think of. I'm aware it's not the best but it's only for discussions sake on a matter which doesnt depend on it entirely.

The level of ignorance regarding NS here is sickening. You try to dumb it down by makin it sound like the particular rabit needed it one day and thus it happened. As if a spontaneous mutation against all odds occurred, which allowed it to survive, just in the nick of time.Nobody claims this bar people who are trying to make it sound like a silly theory as improbable a creationism.And also, regarding this divine force that drives this 'creationistic evolution' some of you like to believe in.....it only serves to show us how poorly you understand natural selection.The fact that some theists are starting to come around even slightly to the idea of evolution is a promising sign at first but sadly all that can be seen are attempts to mould it into some happy middle-ground theory which will keep everyone satisfied but still as ignorant as people were hundreds of years ago.There is no divine force driving evolution. It doesnt require it.