The premise of TikTok has always been deceptively simple. What if you boiled the internet down to just the viral stuff — the weird, fun, outrageous, and compulsively watchable — then made it as easy as possible for everyone to find it? At the heart of it was the prized source code, especially its predictive algorithm, which was good enough to attract 170 million users and convince the average one to spend 100 minutes a day on the app.