David Karp, who sold Tumblr to Yahoo for $1.1 billion, is one more in a line of twenty-somethings and even pre-twenty-somethings whose technology innovations have made them a fortune.
We've seen this before. In the 1990s, young techies with purple hair, ponytails, and earrings (that was the men) disrupted boardrooms; in the 2000s, they wear hoodies. College dropouts such as Mark Zuckerberg have quickly created empires. Parents or future parents-in-law have lent their kitchen tables and garages, as Sergey Brin's mother-in-law-to-be Esther Wojcicki did for Google.
