My reply- To say the past has no relevance to the future is equivalent to saying the diagnosis has no bearing on the prognosis.
He spoke no more.
From Rig Vedic times till the 12th century is Physiology. A healthy, thriving civilization.
Then till 1947 is historical Pathology. How an advanced nation reduced to utter ruin.
Thence till now, Pharmacology. One drug after another we seek a cure.