Prediction is very difficult, especially about the future. -- Niels Bohr Everybody believes in the exponential law of errors [i.e., the Normal distribution]: the experimenters, because they think it can be proved by mathematics; and the mathematicians, because they believe it has been established by observation. -- Whittaker, E. T. and Robinson, G. Normal Frequency Distribution. Those who ignore Statistics are condemned to reinvent it. -- Brad Efron ©