Justin Zheng is pretty sure Dylan Iskandar took his money the first time they met as teenagers, over a poker game in 2019 at a conference run by economist Tyler Cowen. “We just stayed in touch, and we got closer over the years before deciding to start something together,” he said. They were a natural fit: Today, Zheng is 25 and Iskandar is 21, but both already have prodigious backgrounds. In middle school, Zheng got into Ethereum and by high school he’d built a Village Global-backed biometrics s...