Ayurveda is based largely upon two classics - Charaka-Samhita, representing the school of medicine, and Sushruta-Samhita representing that of surgery. These two texts mark the historic switch in the Indian medical tradition, from faith-based therapeutics to its reason-based variant [1]. The Charaka-Samhita, which acquired its present form in circa 1st century CE, uses two remarkable terms to designate the distinctness of these approaches: daiva-vyapashraya (literally, dependence on the unobservable) and yukti-vyapashraya (dependence on reason) [2].