People Ryan X https://docs.google.com/document/d/1wnY-szkPvISLa-fHP2_2CjUJez564kC3/edit Justin Guo https://medium.com/@guodini/a-hangout-app-that-never-went-viral-f59385d55578 https://docs.google.com/document/d/1qZzbAl-Us3-3VSjtv-62VEfONhlgbhsXO-sfxj05AkU/edit?tab=t.0 Companies Amo Founders Andrew Chen https://andrewchen.substack.com/ The cold start problem Nikita Bier