Quote Originally Posted by Montmorency View Post
Rhy, we've already discussed the explanations for behavioral modernity: Population density and relative longevity.
And I've said that that such factors would not have been anywhere near uniform across the many different global locations where civilization suddenly appeared. Different climates, different demographics, different ecosystems, different crops, different resources, different landscape, etc.

Are you telling me that these extremely different environments all suddenly (the blink of an eye in evolutionary terms) created the same population pressures that forced/pushed the development of agriculture, permanent settlement and civilization across the world?

Quote Originally Posted by Montmorency View Post
As archaeological finds of simple cultural products and practices build up, the date is being pushed back towards 100,000 years ago, leaving much less of a "sapiens" gap" than was assumed even 50 years ago.
I am aware of a couple of bits and pieces that are pre-date the roughly 10k year timeframe I've been working in previously. But then again they are dated with the same methods that confuse recent murder victims with ancient skeletons. As I said earlier radiocarbon dating and other methods from that group rely on relative rather than absolute dating - much of it lies in the interpretation and that's why I'm disagreeing with.

Quote Originally Posted by Montmorency View Post
Widespread agriculture in the several major Eurasian regions took over 5,000 years to develop, but it began almost immediately following the end of the glacial cycle/"ice age", indicating that it's pretty much like inventing the light-bulb, or printing press, or steam engine, or really anything else. 5,000 years is only "simultaneously" on a geological time-scale - not a human one.
The simultaneous dates I gave were comparing several regions across the globe, not variance within a particular region. Naturally agriculture will only be adopted when technology and social conditions make it worthwhile - there are parts of the world today where those conditions still haven't been met. Regarding timescales, the only inconsistency is how you reconcile the sudden advent of civilization across the world with the slow, gradual, hundreds-of-thousands-of-years evolutionary approach.