Those are called exceptions. But on the other hand: even some communities that are seemingly fountains of knowledge, also thrive by having masses of addicted c

Those are called exceptions. But on the other hand: even some communities that are seemingly fountains of knowledge, also thrive by having masses of addicted consumers. Sure, it's much better to be addicted to a valid and interesting subject than to something that's harmful. But it's still a form of addiction to spend an excessive amount of time on them, like some people do (yes I am aware not everyone does it).