“Unable to mount experiments that would require energies comparable to that of the Big Bang genesis event, Dr. Chodos believes, growing numbers of physicists will be tempted to embrace grandiose but untestable theories, a practice that has more than once led science into blind alleys, dogma and mysticism.This was conventional wisdom among a lot of physicists in the 1970s. I remember hearing a lecture in the late 1970s explaining the exponentially increasing cost of particle accelerators, and how they will never get to the energies that they need to resolve the questions that they are really interested in. Finding some unified field theory would be a miracle of good luck.
In particular, Dr. Chodos worries that “faddish” particle physicists have begun to flock all too uncritically to a notion called “superstring theory.” […] Deprived of the lifeblood of tangible experiment, physicists will “wander off into uncharted regions of philosophy and pure mathematics,'' says Dr. Chodos, leaving true physics to wither.””
It was known back then that even if susy had merit, there would be dozens of free parameters that would be hopeless to determine experimentally. The string theorists decided that they determine them by pure theory instead. By the year 2000 or so, it was established that the plan would never work.
Bee just wrote a book on how theoretical physics has lost its way, but it has been lost for 40 years