If you take the classical definition of "physics", sure. But chemistry could be said the be the physics of atoms and molecules. Biology could be the physics of organic chemistry. Psychology could be the physics of human perception, cognition, and socialization.

And regarding resource constraints, most bean counters don't have the training or inclination to do operations research analysis. Or are you lumping everyone who does tedious numbers-based work into the bean-counter category? :)

Bean-counting in terms of people imaging it as harder than it actually is.

To pooh pooh economics as mere bean-counting is to misunderestimate the psycho-linguistic powers of its vocabulary and tonality.

When was the last time you saw GDP being computed to include all "bads" and "disservices" generated by domestic enterprise?

When was the last time you saw an economics expert not dressed up in a throat choking monkey suit and not talking in monotone like Ben Stein?