He did bring a lot of tech expertise! The guy taught himself rocket science. There's a quote from Tim Forstall somewhere, recounting an anecdote in which he hap

He did bring a lot of tech expertise! The guy taught himself rocket science. There's a quote from Tim Forstall somewhere, recounting an anecdote in which he happens to one night receive a call from Elon Musk, many years ago, asking about the properties of some obscure metal Forstall happens to be an expert in. Musk was researching it for use in his rockets.