By the time Harry Qi was 23 years old, he had achieved the kind of financial success that most people will never attain: making about $1 million a year. He was working as “a quant” in his first job out of college. That’s hedge-fund speak for a stock-trading analyst at a statistical-model driven “quant” fund. But, like many people who spend their energies pursuing ever more money, he felt empty. “At some point you just want to make a much bigger impact on this world,” Qi, now 29, tells TechCrunch...