Percy stated this really negative comment from a physican he received. I have a story. Early when I contracted CFS I went looking for a PCP general MD provider to coordinate care and document my disability. One MD physician I visited commented to me after a first visit that he didn't believe in disability and would not support my claim because he felt that everyone can work no matter what their illness. I spend about half an hour criticizing him and his irrational beliefs about disability. He didn't respond and I walked out of the clinic to find another doctor. I filed a report with the state medical board about him and they started an investigation which took no action against the doctor. Be very careful to ask your doctor about his beliefs about disability or you will probably be wasting time and jeopardize your claim.
My doctor though thought on me: "He is almost as stupid as an animal, there is no hope for him."
(In fact animals are not as stupid as doctors think.)