Or on the train, or in the car next to you, in line at a cafe.
Unless you can get them to actually /talk/ to you -- something we often don't do in public spaces. But do on the Internet.
And it turns out that direct mind-to-mind connections can be ... problematic.
(They can also be wonderful, and I've already met some really incredible people via Mastodon.)
I'm coming to think that a part of this is that there are limits to how much humanity we can handle. Or, again, scale matters.
Generalistic and moderated instance.