Jensen Huang needs a moment. The CEO of Nvidia enters a cavernous studio at the company’s Bay Area headquarters and hunches over a table, his head bowed. At 62, the world’s eighth richest man is compact, polished, and known among colleagues for his quick temper as well as his visionary leadership. Right now, he looks exhausted. As he stands silently, it’s hard to know if he’s about to erupt or collapse.  Then someone puts on a Spotify playlist and the stirring chords of Aerosmith’s “Dream On”