Before you know it, you're half-way done with your idea and you've accidentally learned how to do it too. In short, you start with little bit of something real and make it tick. Then you make it tock.
David Heinemeier HanssonFacebook has been around for seven years. It has 500 million users. If you can't figure out how to make money off half a billion people in seven years, I'm going to go out on a limb and say you're unlikely to ever do.
David Heinemeier Hansson