Elon Musk is the richest person in the world and the most interesting business leader of his time.

Disruptive and innovative, Musk has already revolutionized two giant industries— autos and aerospace. His planned purchase of Twitter will turn him into a power player in a third: social media.

In this episode we look at what Elon Musk and his team achieved with SpaceX and share part of our 2121 interview with journalist Eric Berger, senior space editor at the science and tech news site, Ars Technica. Eric wrote the book "Liftoff: Elon Musk and the Desperate Early Days That Launched Space." We also hear from our co-host Jim about his Commentary Magazine article, "Can Elon Musk Save Twitter?" We learn more about the risks and obstacles involved in buying the digital public square that Musk plans to take private.

With SpaceX, Musk pioneered the use of reusable rockets, drastically cut the cost of launches and made space exploration much more interesting to people around the globe. He turned Tesla into the world's most successful electric car company. He is also founder of the tunnel drilling firm Boring Company, and co-founder of the neuro-technology firm Neuralink and Open AI, an artificial intelligence research lab.

"He's very demanding of pretty much everyone around him," says Eric Berger. "If you go to work for Elon Musk you better expect to work very hard and deliver, and with him you are going to get the chance to do great things."

Recommendation: Both Jim and Richard explain why they are active Twitter users.