Paul Krugman "invented the academic field of currency crises"?!? Horsesh!t. I honestly can't think of an economist alive during my lifetime who has an ego more out of disproportion with actual talent and accomplishment than Paul Krugman. (Although there is some stiff competition and John Kenneth Galbraith might have given Krugman a run for it.) His contribution to the modern understanding of currency collapses was editing a volume of papers contributed by other economists for U. of Chicago Press in 2000. And honestly, most of those were horsesh!t too.