I don't think you should be allowed to eat in a restaurant if you haven't waited tables at least once. It's so irritating when I see people being rude to waiters, like, it makes me want to slit their throats! Like, really? You're really this inconsiderate?
First, I think the science of monetary economics has clearly gotten better.
And it's interesting, when you look at the predictions made during the peak of the boom in the 1990s, about e-commerce, or internet traffic, or broadband adoption, or internet advertising, they were all right - they were just wrong in time.