Stephen A. Lawrence wrote:

Theories are a dime a dozen in this business. As far as I know none of them makes useful predictions -- or even testable predictions! . . .

If I recall correctly, Hagelstein's theory based on phonon coupling to the lattice made testable predictions. However, that was a number of years ago, and since the theory seems to have sunk without a trace, I'd have to guess that it was, indeed, "falsified", so to speak.

You are probably right. I spoke rather harshly. To be honest, I can seldom follow lectures about theory long enough to see if they make predictions. However:

1. At conferences I sometimes follow Ed Storms around as he asks the theorists, "Okay, so what testable predictions do you make? How can I use this theory to improve my experiments?" They seldom give a satisfactory answer. Except in one instance, with Hagelstein's theory about laser stimulation. Hagelstein predicted it would work at specific wavelengths (with 2 lasers) and by gum, it seems to do that. So says Cravens.

2. In theory papers I do not recall seeing a section titled "predictions" or something like that.

- Jed

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