the y combinator is a trick under lambda calculus, which is a formal expression for expressing algorithms, a math concept, basically. emily: how did you guys decide to work together on this? because you weren't married yet, but that is a big decision. paul: that was -- it was scary. because we had only been dating for a year. ♪ emily: there are myths about so many of the great companies, start-ups, founders that are boiled down into legend. and what is the myth of y combinator and what is the reality? paul: people just don't realize how, like, not interested we were in making money. i'm thinking of all these people, saying on forums, "oh, it's so self-serving," but honestly, in the beginning, we weren't trying to make money. jessica: it was all an experiment to see if these new ideas could work. emily: a lot of people think of it as paul graham's y combinator. paul: oh, there is a myth. there is a really big myth. emily: you call jessica the secret weapon. paul: like, nothing has ever happened at y combinator that jessica did not, like, set her seal of approval on. right? she basically ha