Explain a Complex Game Mechanic to a Player Who Keeps Misusing It

Explaining the same rule the same way for the third time rarely works better the third time. This finds a different angle than whatever you have already tried, grounds it in a concrete example from an actual game state instead of rules text, and gives you one question to check it has actually landed.

A player in my group keeps misusing {MECHANIC} in {GAME} and I need to explain it properly without sounding condescending. {INPUT} = [describe how they are currently misusing it and what has failed to land so far].

Explain {MECHANIC} using a different angle than whatever has already been tried according to {INPUT}, ideally through a concrete example from an actual game state rather than abstract rules text. Keep the explanation under 120 words and end with one quick check question I can ask them to confirm it has landed.