There has been, Dalrymple notes (from 1:07:09),
a very large number of doctor-writers. This is not surprising: medicine is good training for a writer. The doctor is involved in the most intimate details of a patient’s life, but at the same time, he has a kind of objectivity; he is both involved and observing. This is a good combination if you want to write.
Dalrymple himself has
always wanted to write. I had this desire from an early age.