Does that mean we should give up? Probably. But there are two issues worth considering. The first is - is it really true that drugs destroy the integrity of the game?

When people reflexively write checks to institutions that have billions of dollars in the bank, they are essentially committing a moral crime. Your money could do good in this world and you're choosing instead to waste it. People have to do a better job of that. You've got to find places where your money's going to do some good and direct your dollars towards that institution.

Living a long life, the conventional wisdom at the time said, depended to a great extent on who we were-that is, our genes. It depended on the decisions we made-on what we chose to eat, and how much we chose to exercise, and how effectively we were treated by the medical system. No one was used to thinking about health in terms of community.

The answer is that we are not helpless in the face of our first impressions. They may bubble up from the unconscious - from behind a locked door inside of our brain - but just because something is outside of awareness doesn't mean it's outside of control.

The issue isn't the accuracy of the bombs you have, it's how you use the bombs you have - and more importantly, whether you ought to use bombs at all.

The iPod is clearly a tipping point (and I'm not quite sure it is a wholly positive development), because it is a revolution in the way that we consume creative property, which I would call art. It has radically changed the relationship between the artist and the audience, how money changes hands, and how much money changes hands. Music was the first, and books are coming next. The Kindle or some form of electronic book is clearly inevitable, and it will massively reshape how books are sold, who pays for them, and how they're consumed. It is going to be really fascinating.

Occasions when you can change your mind should be cherished, because they mean you're smarter than you were before.