As every scuba diver knows, panic is your worst enemy: when it hits, your mind starts to thrash and you are likely to do something really stupid and self-destructive.

I should emphasize this, to keep well-meaning but misguided multiculturalists at bay: the theoretical entities in which these tribal people frankly believe — the gods and other spirits — don't exist. These people are mistaken, and you know it as well as I do. It is possible for highly intelligent people to have a very useful but mistaken theory, and we don't have to pretend otherwise in order to show respect for these people and their ways.

Postmodernism, the school of 'thought' that proclaimed 'There are no truths, only interpretations' has largely played itself out in absurdity, but it has left behind a generation of academics in the humanities disabled by their distrust of the very idea of truth and their disrespect for evidence, settling for 'conversations' in which nobody is wrong and nothing can be confirmed, only asserted with whatever style you can muster.

I think that what one can see from a Darwinian account is how the addition of culture in our species turns us into a very special sort of animal, an animal that can be a moral agent in a way that no other animal can be.

If the concept of consciousness were to fall to science, what would happen to our sense of moral agency and free will? If conscious experience were reduced somehow to mere matter in motion, what would happen to our appreciation of love and pain and dreams and joy? If conscious human beings were just animated material objects, how could anything we do to them be right or wrong?

It is not so much that we, using our brains, spin our yarns, as that our brains, using yarns, spin us.

The earth has grown a nervous system, and it's us.