In Guns, Germs, and Steel, how does Diamond challenge traditional assumptions about the transition from hunter gathering to farming?

In Guns, Germs, and Steel, how does Diamond challenge traditional assumptions about the transition from hunter gathering to farming?
In Guns, Germs, and Steel, how does Diamond challenge traditional assumptions about the transition from hunter gathering to farming?
In Guns, Germs, and Steel, how does Diamond challenge traditional assumptions about the transition from hunter gathering to farming?