There are several other interesting cases of oracles that did not predict anything, and of mainstream economists that when they did predict the crisis, they did it for the wrong reasons and got the story and the consequences incorrectly (all bring up more stories from Tom's book in other posts). The essential point that Tom makes, however, is a sociological one, that helps understand the predominance of the mainstream paradigm. The profession suggests that, while predicting the crisis was impossible, a few illuminati within the mainstream did foresee everything, and as a result there is no systemic problem with economics as a science. No need for revolutionary change in the profession.
Levi-Strauss once said that myths are totalitarian stories that eliminate all possibilities of doubt, since they explain everything. In this case, the myth of the lone, foresighted, neoclassical economist preserves the culture of complacency in the profession with the utter irrelevance of mainstream economics.