Progress............................

 F. Scott Fitzgerald, describing his own mental breakdown, observed that 'the test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.'  And the mark of the first-rate decision-maker confronted by radical uncertainty is to organize action around a reference narrative while still being open to both the possibility that this narrative might be false and that alternative narratives might be relevant. . . . The willingness to challenge a narrative is a key element not only in scientific progress but in good decision-making.

-John Kay and Mervyn King,  Radical Uncertainty:  Decision-Making Beyond The Numbers