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Venture capitalists and investors have bought into the media-driven narrative that younger people are more likely to build great companies. Vinod Khosla, a cofounder of Sun Microsystems and venture capitalist, said, “People under 35 are the people who make change happen . . . people over 45 basically die in terms of new ideas.” Paul Graham, the founder of Y Combinator, the famous start-up accelerator, said that, when a founder is over the age of thirty-two, investors “start to be a little skeptical.” Zuckerberg himself famously said, with his characteristic absence of tact, “Young people are just smarter.” But, it turns out, when it comes to age, the entrepreneurs we learn about in the media are not representative. In a pathbreaking study, a team of economists—Pierre Azoulay, Benjamin F. Jones, J. Daniel Kim, and Javier Miranda (henceforth referred to as AJKM)—analyzed the age of the founder of every business created in the United States between the years 2007 and 2014. Their study included some 2.7 million entrepreneurs, a far broader and more representative sample than the dozens featured in business magazines. The researchers found that the average age of a business founder in the United States is 41.9 years old—in other words, more than a decade older than the average age of founders featured in the media. And older people don’t just start businesses more than many of us realize; they also succeed at creating highly profitable businesses more often than their younger peers do. AJKM used various metrics of success for a business, including staying in business for longer and ranking among the top firms in revenue and employees. They discovered that older founders consistently had higher probabilities of success, at least until the age of sixty.
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Seth Stephens-Davidowitz (Don't Trust Your Gut: Using Data to Get What You Really Want in Life)