the core profit model of every free app is selling your attention to advertisers. this has the unfortunate side effect of optimizing to waste massive amounts of your time and make you feel awful but unable to quit. on top of that its increasingly hard to quit the apps simply because they have so successfully become vital knowledge platforms. but there is a way with a little web magic to block all the attention-sucking parts while keeping the knowledge-sharing parts. youre just gonna have to read part 3 to figure out what that means im sorry dude.