==*These are my running notes*== --- fwiw, these are my running notes from my time working across >> recommender systems, content moderation, newsfeed, search and anything else. I am just distilling some principles that I learnt personally. I plan to keep it very general. Building a social network is actually quite hard, [network fx](https://www.nfx.com/post/network-effects-bible) is the core idea around which all successful social networks are built. Social networks are an interesting breed of products. They enjoy significant moats that are hard to emulate if the incumbent is already deeply entrenched. --- Use these links to jump around: 1. ["no one will use your social app"]("no%20one%20will%20use%20your%20social%20app".md) 2. [the cold start problem](the%20cold%20start%20problem.md) 3. [[ai vs growth tradeoff]] 4. [[how i built news ai from zero to 3 million swipes]]