Follow-up to: Boring Advice Repository
Many practical problems in instrumental rationality appear to be wide open. Two I've been annoyed by recently are "what should I eat?" and "how should I exercise?" However, some appear to be more or less solved. For example, various mnemonic techniques like memory palaces, along with spaced repetition, seem to more or less solve the problem of memorization.
I would like people to use this thread to post other examples of solved problems in instrumental rationality. I'm pretty sure you all collectively know good examples; there's a comment I can't find from a user who said something like "taking a flattering photograph of yourself is a solved problem," and it's likely that there are other useful examples like this that aren't common knowledge. Err on the side of posting solutions which may not be universal but are still likely to be helpful to many people.
(This thread is allowed to not be boring! Go wild!)
Can we start a thread for unproductive but frequently asked questions that can easily be replaced with other, more productive questions? Like if you're asking this, you probably mean to ask something else. Does that sound useful?
One example of these is yelling at a small child, demanding to know why they broke something, which is not that useful because small children sometimes don't have good answers or they have answers that don't quite take all of reality into account. (For example, maybe the child wanted to see what would happen but didn't realize might be permanent or unfavorable.) The more productive question is "How can we prevent you from breaking these types of objects again?"
You can start whatever threads you want! You have the power! (What question should you have replaced that question with, I wonder...)