It’s widely believed that the most successful entrepreneurs are young. Bill Gates, Steve Jobs, and Mark Zuckerberg were in their early twenties when they launched what would become world-changing companies. Do these famous cases reflect a generalizable pattern? VC and media accounts seem to suggest so. When we analyzed founders who have won TechCrunch awards over the last decade, the average age at the time of founding was just 31. For the people selected by Inc. magazine as the founders of the fastest-growing startups in 2015, the average age at founding was only 29. Consistent with these findings, Paul Graham, a cofounder of Y Combinator, once quipped that “the cutoff in investors’ heads is 32… After 32, they start to be a little skeptical.” But is this view correct?