The other heroic assumption made by standard models is that the central bank responds instantly a shock hits, and the economy responds instantly to the central bank's response. (worthwhile.typepad.com)
The weight of this evidence suggests that it would take a set of heroic assumptions to believe that inflation will remain at the current extremely low levels. (us.beyondbullsandbears.com)
Those are pretty heroic assumptions I think, and you have to wonder how quickly the company could ever get there? (wexboy.wordpress.com)