It's good to remember there is no algorithm here and part of what that means is that boosting becomes that much more important.
I sometimes boost toots of things well outside my field, especially when they're about conferences, grad school opportunities, and events because I want those who are trying to get the word out to feel that the Fediverse is at least as good a place to do that as the billionaire-owned walled gardens are.
I would like more of them to establish here.