I've been reading some books on the subject that claim the contrary, also based on archaeological proofs (and on identifying faults with the existing studies). So I wouldn't state that with such confidence.
See RoboTeddy's comment for some details on this POV.
And also, if we look at bonobos, another primate closely related to us, we might get a completely different perspective on life in the distant past. It's just that we discovered chimpanzees first.
I've been reading some books on the subject that claim the contrary, also based on archaeological proofs (and on identifying faults with the existing studies). So I wouldn't state that with such confidence.
See RoboTeddy's comment for some details on this POV.
And also, if we look at bonobos, another primate closely related to us, we might get a completely different perspective on life in the distant past. It's just that we discovered chimpanzees first.