In the wake of the election, some despairing technologists have wondered how to improve the products and systems that led to this result. “There are things we were optimizing for that had unintended consequences,” says Justin Kan, a venture capitalist at Y Combinator and co-founder of Twitch. In designing to maximize engagement, social networks inadvertently created hives of bias-confirmation and tribalism. There are things we were optimizing for that had unintended consequences (Justin Kan, Y Combinator)