Hint, in the sense that - here was a common ailment and their 'model' was utterly bogus, from the first - passed on in the PDR forever [which IS their static MO.]
(Remember the antediluvian 'therapies'? (drink milk etc.) before some>one< actually Investigated.)

Nope.. most MDs got there by becoming Good Memorizers + honing the ability to say, sodium ethylmercurithiosalicylate ... without stuttering. Not the smoothest drawers in the desk.