The factor of 2 is in the limit of infinitely many readers.
I agree that content discovery is tough. Though note that the question is largely about finding topics, not necessarily conversation partners, and here we have better mechanisms (if I’m talking with someone I know, I can bring up the topics most likely to interest them). I think that connecting people is a hard problem we’re not great at, though the intuition that it looks hard is also tied up with a few of the other problems (talking from higher to lower values of time, compensating talkers).
The factor of 2 is in the limit of infinitely many readers.
I agree that content discovery is tough. Though note that the question is largely about finding topics, not necessarily conversation partners, and here we have better mechanisms (if I’m talking with someone I know, I can bring up the topics most likely to interest them). I think that connecting people is a hard problem we’re not great at, though the intuition that it looks hard is also tied up with a few of the other problems (talking from higher to lower values of time, compensating talkers).