Teach people how to recognize the problem, not merely memorize the answer.

Answers age quickly. The ability to recognise what kind of problem you are looking at does not, and it is what lets someone handle situations that had not been invented when they were taught. Memorised solutions produce competence in familiar cases and helplessness everywhere else.

When you teach, spend more time on how the problem is identified than on the fix. Give examples that look different on the surface and share a structure. Recognition is the transferable part.