The idea behind a dish - the delight and the surprise - makes a difference. Great literature surprises and delights, and provokes us. It isn't just 'Here's the facts - boy meets girl, boy loses girl, boy gets girl.' It's how you tell it.

The whole hardware industry has experienced the phenomenon in which every time computers get cheaper, they appeal to a new set of users; every time they get more powerful, old customers upgrade.

People get cranky when you burst their bubble. Over time, advances in astronomy have relentlessly reinforced the utter insignificance of Earth on a celestial scale. Fortunately, political and religious leaders stopped barbecuing astronomers for saying so, turning their spits with human-rights activists instead.

With cult foods, there is an underlying assumption that the best cooking ideas came generations ago. Yet culinary innovation is nothing to be ashamed of. When a chef tells me he is cooking with his grandmother's recipe, I always wonder why. Did talent skip the past two generations?

Technological 'revolutions' don't really overthrow anything - they simply append a new and dynamic market to that which went before.

If people don't get paid for their inventions, that's not a good thing. In the case of many patents, there are people who aren't in a position to take them to the next level. If you don't enforce your rights, no one is going to enforce them for you.

The physics of water is central to cooking, because food is mostly water. All steak that you cook is actually boiled on the inside.