Hard to make a list off the top of my head—maybe I could keep a running list and post it when it reaches a certain length—but I feel like the LessWrong react options are often disappointing. For example, I might search for a react that means “can you define this / be more specific / what does this mean” but fail to find one.
Meanwhile, there are a bunch of reacts whose purpose I don’t understand: Moloch, Paperclip, “I beseech you!”
I also wouldn’t use some of the complimentary ones, like “Concrete” or “Scout Mindset,” because I imagine they would seem patronizing, pointless, etc. in any context.
My intuition for reacts is that they compactly add info that would be cluttering as a reply to a lengthy post. For example:
If a lengthy post contains “I have often heard AI safety researchers say they are motivated by high earnings” then I could react with “+1″ to indicate that I have also heard that, instead of saying so in a very short reply
If a post has a typo, I could react with “Typo” (though I’ve never actually done that)
The “X% Likely” reacts also fit into this theme.
In particular, I imagine using these when I’m not part of the thread (because otherwise I could mention them in the reply), which means that it’s not clear how the writer is supposed to engage, so the audience is mainly other readers.
Not to belabor your specific case—I agree directionally that there’s no intense gatekeeping or connections needed—but you worked at Jane Street and MIRI and then did MATS before joining METR right . . . OP’s claim isn’t that specific time-consuming credentials are needed but that even “smarts + unpredictable fit” things are hard to signal in an application from outside (without PhDs or work experience).