All we know about the world teaches us that the effects of A and B are always different-in some decimal place-for any A and B. Thus asking "are the effects different?" is foolish.
John TukeyIn a single sentence the moral is: admit that complexity always increases, first from the model you fit to the data, thence to the model you use to think about and plan about the experiment and its analysis, and thence to the true situation.
John TukeyI know of no person or group that is taking nearly adequate advantage of the graphical potentialities of the computer.
John Tukey