Some have, but many persist for years (e.g. Scared Straight).
I don't understand how policy leaders can look at hard numbers and say, "fuck it, let's keep funding it."
Abbott: Who is your expert?
Tucker: I don’t know, but I can get one by this afternoon. The thing is, you’ve been listening to the wrong expert. You need to listen to the right expert. And you need to know what an expert is going to advise you before he advises you.
- The Thick Of It