Diamond's thesis seems to revolve around the ideas that Europeans were successful and certain things that others weren't - like domesticating animals (or popularizing guns, spreading germs, and making a lot of steel).
Has anyone else noticed that there isn't much there about what the Europeans tried and failed to do, or what non-Europeans tried and succeeded at?
It seems to me there is a 2x2 strategic game here. Europeans on one side, and non-Europeans on the other. The opponents choose one of two strategies, leading to one of the four cells being the outcome.
Diamond's idea is fine - but what about the other outcomes? Why did Europeans domesticate animals instead of doing something else? Why did non-Europeans choose not to?
Interpreting Diamond seems to be a lot like listening to jazz - the silences are as important as the notes that are hit.