I agree. The thing that makes me critical of string theory isn't that it's (so far) difficult to test, but that it's been The Thing in certain quarters for a lo

I agree. The thing that makes me critical of string theory isn't that it's (so far) difficult to test, but that it's been The Thing in certain quarters for a long time and has yet to yield much (unless something's happened I'm not aware of). It also seems to get more complex over time.