Tomasello examines two of the great debates in Western civilization: are humans born cooperative and helpful and society corrupts them, or are they born selfish and unhelpful and society teaches them to be better? And if cooperation is evolutionarily "easy" when participants benefit, what makes humans collaborate in the myriad of complex ways that they do even when there are no obvious benefits? Discussion seminars at 10:00 am on both 10/30 and 10/31.