I mean is fine to interview your friends, but he could also consider to invite other professionals from fields he hasn't interviewed yet. For instance, Civil engineering the first engineering of all and the one that allows real, tangible development and progress and enables all of the other human endeavours. But, Lex is double and triple down in the same topics/people, which is ok, I love John Danaher, Elon, Jim keller, chess players, robotics,  crypto, jujitsu and so on so forth. However, I think there are many other topics, he hasn't covered yet that are very interesting too.,(reply>), Thanks for watching!<br>lets interact directly via above number.<br>got more updates and info for you.