[Excerpted from Yoga Therapy, Chapter 3, "Modern Medical Science.]

I'm intrigued and concerned that in a yoga world in which truth ("satya") is widely considered a supreme moral principal there is widespread acceptance or tolerance of falsity, or what in Trumpian language might be called "alternative facts." Why do so many otherwise intelligent and rational people subscribe to ideas or theories that have long ago been proven wrong?! The concept of nadis, which I've explained in detail in some of my books, is from pure speculation, with some writers asserting that the culturally agreed upon number of 72,000 is somehow "correct." Similarly, we have the theory of humours, without which most of Ayurveda and the concept of the gunas loose their foundation...humours being concepts for explaining the basic building blocks of life forms (and other forms) that were disproven in early post-Renaissance physics. 

The scientific method claims to approach health and healing with empirical evi...