It would be hard to overstate the impact that Peter Thiel has had on the career of Sam Altman. After Altman sold his first startup in 2012, Thiel bankrolled his first venture fund, Hydrazine Capital. Thiel saw Altman as an inveterate optimist who stood at “the absolute epicenter, maybe not of Silicon Valley, but of a Silicon Valley zeitgeist.” As Thiel put it, “If you had to look for the one person who represented a millennial tech person, it would be Altman.”Each year, Altman would point Thiel ...