Andy Rachleff on what it takes to be a great entrepreneur.

Steve Jobs had a home-brew computer club. Larry Page, who was working on a PhD in computer science at Stanford, used his understanding of ranking in academic publishing to develop the crawler that led to Google. Facebook grew out of Mark Zuckerberg’s previous applications, like Facemash. In other words, the ideas found them because they were highly authentic to their opportunities.

I’ll bet none of the three initially set out to develop billion-dollar businesses, but I’m confident they quickly thought they could change the world.