With rockets, he is deeply involved in the area and his proficiency have been confirmed by top engineers, a few quotes from them here: https://old.reddit.com/r

With rockets, he is deeply involved in the area and his proficiency have been confirmed by top engineers, a few quotes from them here: https://old.reddit.com/r/SpaceXLounge/comments/k1e0ta/evidence_that_musk_is_the_chief_engineer_of_spacex/ https://old.reddit.com/r/SpaceXLounge/comments/k1e0ta/eviden... I'm not sure about Elon's proficiency with software, but based on his comments on twitter I'd lean on him being out of touch there. He does seem to be knowledgeable on the AI/DL side though, see Andrej Karpathy's comment: https://news.ycombinator.com/item?id=33703617 https://news.ycombinator.com/item?id=33703617