Repo

inflation is at 7%. you have one dial and it answers late.

turn the one dial a central bank has — and feel it answer six months after you asked

A central bank has one real lever, the interest rate, and it does not touch the economy today. It touches banks first, then loans, then spending, then prices — a chain that takes months to travel, so the rate you set now is reacting to a problem that already existed a while ago, and will not finish acting until well after you have moved on to worrying about something else. Turn the dial too hard and the delayed effect lands as a crash, not a correction, because by the time it arrives you cannot see it coming. That lag is not a flaw in the system. It is why every real rate decision is small, slow, and still gets second-guessed for years afterward.

Concepts: feedback-loops, timing.

An interactive you play with one thumb, on Wundr.