Market-system inventiveness

Nothing rivals the market system in producing what people want—nor, even more so, in delivering what people don’t yet know they want. My parents, when young, could not envision a television set, nor did I, in my 50s, think I needed a personal computer. Both products, once people saw what they could do, quickly revolutionized their lives. I now spend ten hours a week playing bridge online. And, as I write this letter, “search” is invaluable to me. (I’m not ready for Tinder, however.)