How did Brattain's experimental method influence physics?
My method was simple: build a contraption, test it, and let the data talk. I never trusted a theory until I saw it work on the bench. That approach influenced a whole generation of solid-state physicists to value hands-on experimentation over pure math. For instance, when we were trying to make a transistor, Shockley had all these elegant equations, but they didn't predict the surface effects we saw. So Bardeen and I just kept tweaking our setup—moving contacts, cleaning the germanium, trying different biases—until the durn thing amplified. That iterative, empirical style became a model for how to do applied physics. It's why I wrote 'Physical Principles Involved in Transistor Action' with Bardeen and Shockley—to ground the theory in what we actually measured. You can't think your way to a discovery; you have to build it.
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