2014, Stanford. Paul Graham was outlining one of the characteristic mistakes of young founders. One of them, the co-founder of startup accelerator Y Combinator underlined in his guest lecture in Sam Altman's startup class at Stanford, is to go through the motions of starting a startup. “They make up some plausible-sounding idea, raise money at a good valuation, rent a cool office, hire a bunch of people,” reckoned the venture capitalist. From the outside, he explained, that seems like what startups do. Soon, they realise how messed up they are. While imitating all the outward forms of a startup, Graham said, they have neglected the one thing that's actually essential: Making something people want.