“In their calmer moments, investors recognize their inability to know what the future holds. In moments of extreme panic or enthusiasm, however, they become remarkably bold in their predictions: they act as though uncertainty has vanished and the outcome is beyond doubt. Reality is abruptly transformed into that hypothetical future where the outcome is known. These are rare occasions, but they are unforgettable: major tops and bottoms in markets are defined by this switch from doubt to certainty.” -Peter Bernstein