Later, Guvench and I took an Uber to his next destination: a barbecue for alumni of Y Combinator. The barbecue was in a warehouse owned by the startup Move Loot. It was full of forklifts and plastic-wrapped couches, and youthful entrepreneurs milled around tables displaying trays of smoked meat. I took out my notebook and noticed that two young programmers were staring at me. Finally, one of them came over and introduced himself. His name was Paul Cretu, and he and his partner were working on transcription software that records everything you say, leaving you with a searchable record of your thoughts and conversations. He wanted to hear all about my reporter’s notebook and how I was using it. “We’ve never seen anyone taking notes in the wild,” he said.