For example the famous 2% inflation goal is regularly presented as an apolitical target based on firm economic theory. In reality it was invented out of whole cloth for purely political reasons:
https://www.reuters.com/markets/mouse-that-roared-new-zealan...
What if, they asked, they just told everyone the rate should be much lower - say roughly 2% - and then aim for that?
"It was a bit of a shock to everyone, I think," said Roger Douglas, the Labour Party finance minister at the time who worked with the Treasury and Reserve Bank of New Zealand (RBNZ) to pioneer the policy. "I just announced it was gonna be 2%, and it sort of stuck."
Like that, inflation targeting was born.