The answer to this can be found at the beginning of Chapter 6. There, Diamond gives a number of assumptions that he says we have about the transition from hunting-gathering to food production. Among them are:
- We think farming is so much easier than hunting-gathering but it's really not. The first farmers might well have worked harder for less food than hunter gatherers do.
- We think that people discovered farming and chose to start doing it. But really, hunter-gatherers just started doing things that eventually led to farming. They weren't consciously trying to farm. They just did things that made farming eventually become possible.
- We think that there is a clear line between these kinds of economies. But really, there is not such a clear line. The transition from one to the other is pretty gradual.