The difference between physics and pure math is not in how it "looks". A lot of physics already "looks" like math, but whether it leads to some testable conclus

The difference between physics and pure math is not in how it "looks". A lot of physics already "looks" like math, but whether it leads to some testable conclusions. I would say that String Theory has been more similar to Math than Physics for a while, in that it hasn't really led to many interesting experiments.