New ask Hacker News story: Ask HN: When to Build a Faster Horse?

Ask HN: When to Build a Faster Horse?
6 by k__ | 6 comments on Hacker News.
Henry Ford once said: "If I had asked people what they wanted, they would have said faster horses." But he didn't went out to make horses faster, he built a car. I read many stories like that. People say listen to your customers, but many successfully built something their customers wouldn't have tought about, let alone liked when they heard the idea. What's your opinion on this? Is there a point in faster horses? Should we focus on cars? Are their heuristics that help us choose the right way?