Explain, in a 2 page paper, why the time course and function of evolutionary adaptations are relevant for understanding why some of our thought processes are adapted to a hunter-gatherer society

Cosmides and Tooby present the example that dung flies liking the smell of dung while humans hate the smell. Behind this example is an insight into the processes of evolution, both in terms of its time course and in terms of what adaptations do for us. Using the dung example or another one, explain, in a 2 page paper, why the time course and function of evolutionary adaptations are relevant for understanding why some of our thought processes are adapted to a hunter-gatherer society instead of to the industrial, technological age that we live in.