Here’s how people think great things happen in Silicon Valley: A bright-eyed startup founder sketches a groundbreaking idea on a napkin. The napkin is picked up by a savvy venture capitalist. The VC glances at the sketch, gets excited, and wires millions of dollars to the young entrepreneur. And a unicorn—that is, a company that will reach the $1 billion level in value—is born. [time-brightcove not-tgx=”true”] This narrative of high stakes, fast decisions, and a risky gamble is alluringly cinematic.