This is why I've long believed voting systems should restrict the voting age to 16-28. After all, whom would you rather have voting: people wracked with doubt and who fear their own ignorance, or people who know everything?
But in truth, one of my favorite deposition answers goes something like this:
> I'm not prepared to offer an opinion on that question.
But actually, "prepared" is often literally the case.
Before critical depositions, experts spend a day or two, with attorneys and consultants, practicing replies. And experts are very cautious about answering unexpected questions.
Great teachers recognise this and will give you a task that invites you to make the same errors as they did.
This is the basis of guild apprenticeships, PhD supervision, and 20% time for junior developers.
... and I’m happy to have listened and acted on that advice.
Not everyone will listen, but sometimes there’ll be someone that does, or having heard the same advice numerous times from different people it’ll start to sink in at least a little.