<<Why, then, would there be developed humans in regions where there are also apes and monkeys? >>
In regions where apes and humans were in close contact, it is likely that the two groups interbred. So, there is not diffentiation.
Humans likely formed most of their diffentiation during a single ice age. Before our geologic exclusion, we were apes like everyone else. Afterwards, we were different enough that other apes we ran into didn't want to associate with the carnivirous scavengers we'd become.
It's also been shown that evolution occurs faster in periods of envirormental stress. A species will stay almost identical over a million idyllic years, but during 5 hectic millenia, it will evolve or die off.
After humans had evolved into what we are, we spread out to new areas. The apes in those regions would not learn from us, likely because we killed them for food.
<<Wouldn't they have watched the more advanced apes and also learned from them?>>
At the beginning, there was nothing humans could teach apes. We did not use tools until we were so different that we were not welcome.
At first, we were just chimpanzes in the trees at the edge of the forest, instead of in trees in the middle of the forest. |
