Qian Yingyi, Dean of Tsinghua University's School of Economics and Management, asked him: "You have no aerospace background, and rocket technology is one of the most cutting-edge hard sciences. How did you manage to found SpaceX?"
Musk explained that deep expertise can be cultivated outside of formal academic courses—through extensive reading, hands-on experimentation, and direct interaction with experts in the field.
Today, Musk retweeted this old video again, saying, "It's precisely because I'm not in this industry that SpaceX can make such radical breakthroughs. The same goes for Tesla."

