[tveita]

I'm saying that it's invalid to measure mainstream economics by looking at major crises and asking "how many of these did they foresee". A meaningful analysis would have to consider whether they foresaw and prevented any crises.

I don't see how the Nobel Memorial Prize is relevant to that point. If I had to guess, I'd say they got it jointly because developing the theory and giving it a formal definition was an import precursor to testing it empirically, and that seeing whether or not it holds in a given market is useful for analysis. Remember that this is a prize for science.