Like most North Americans, I'd been raised on the notion that milk is the first food, and everybody must like it because it's so good and so important for growing up and for being healthy.

Food, like sex, is one of the principal kinds of human activity that engage people when they wonder about how to account for different kinds of human behaviour.

Every theory presented as a scientific concept is just that; it's a theory that tries to explain more about the world than previous theories have done. It is open to being challenged and to being proven incorrect.

Here you do have forests, where pigs could be raised by letting them root about in the forests for a good part of the year. Therefore, you have a different attitude toward them compared with what continues to exist in the Middle East.