Actually it doesnt contradict him at all. I fact it tells you the M.D. came from the latin. Thats why its M.D. not D.M.
Yes Doctor of Medicine = M.D. but the two letters M.D. do not literally stand for Doctor of Medicine, they stand for Medicinae Doctor.
Its not that difficult to understand.
Hospital badges MD just means physician or Medical Doctor if you will. Just like PA badges mean Physician Assistant. They are liability placards, not wearable diplomas. Which is why D.O.s can and do wear badges that say MD all of the time, because it signifies to the general public that they are medical doctors aka physicians. (Thats if the hospital badges dont just say "Physician"; which some do).
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