[yock]

I can't speak to Dr. Gilmartin himself, but being a doctor doesn't make you an engineer capable of evaluating a complex medical device. My pulmonogolist is a good doctor and understands how to best configure my own CPAP for my health. He really has little idea how the thing actually works.

[onion2k]

Gilmartin doesn't need to know the engineering principles involved, just that it provides the claimed the medicinal benefits. As a doctor that's exactly what he's qualified to assess. Besides, he's a doctor at Havard, there'll be some very qualified engineers around to assess that side of things.