Business is war! Its leaders are strategic commanders, who boldly snatch victory from the jaws of defeat - and who perform other acts of derring-do. This kind of talk sounds great in the boardroom, and, for that matter, in the bookstore, where dozens of authors counsel would-be corporate warriors.

Ultimately, my Ph.D. is in mathematical physics, focusing on quantum field theory and curved space-time, and I worked with Stephen Hawking.

If you have a block of ballistics gelatin and a high-speed camera, pretty soon somebody gets a gun!

Pressure cookers are relatively inexpensive, they're in every kitchen store, your grandma probably had one, but a lot of people don't. A pressure cooker is interesting because by pressurizing the vessel, you're able to cook much hotter than the boiling point of water, and still have water be present.

Food, like anything else, lives in the physical world and obeys the laws of physics. When you whisk together some oil and a little bit of lemon juice - or, in other words, make mayonnaise - you are using the principles of physics and chemistry. Understanding how those principles affect cooking lets you cook better.

People who grow up in a region doubtless have a better cultural awareness of their own cuisine, but it's also true that a lot of locals go to McDonald's, Applebee's and the like.

The techniques of being an Internet visionary are just like those of lower-tech fortunetellers through the ages. A technological visionary must tell people what they want to hear, because your company's stock won't rise if you spout an unpopular vision to analysts.