That's a very optimistic point of view on the ability of people to learn from examples. No matter how hard SF fails, there will be lots of people going around a

That's a very optimistic point of view on the ability of people to learn from examples. No matter how hard SF fails, there will be lots of people going around and telling how it have failed because of not building enough social housing for the poor, not having high enough taxes, and allowing rich to escape after robbing the city dry. Just like there are people saying that communist countries fail because of US sanctions.