Ed Jaynes provides the example of the Quantum Syllogism. I cannot count the number of times that I have heard this from proponents of QM. This is the logic of the Quantum Syllogism: ___________________________________________ The present mathematical formalism can be made to reproduce many experimental facts very accurately. *Therefore* The *physical interpretation* which Niels Bohr tried to associate with it must be true; and it is naive to try to circumvent it. ___________________________________________ Compare this with the Pre-Copernican Syllogism: ___________________________________________ The mathematical system of epicycles can be made to reproduce the motions of the planets very accurately. *Therefore* The theological arguments for the necessity of epicycles as the perfect motions must be true, and it is heresy to try to circumvent them. ___________________________________________ In what way are they different? The difference is only that today everybody knows what is wrong with the Pre-Copernican syllogism; but (from the frequency with which it is still repeated) only a relatively few have yet perceived the error in the Quantum Syllogism. All the best John B.