I had the gift. I suppose I came stepping out of the womb teaching. If all goes according to plan I'll probably be instructing the fellow in black undertaking me to my tomb. We all do what we can't help doing. I would say, except for the difference in density of the raw material, the three arts are about the same.
Differences there are, of course.
A head, situated on the neck of someone who's willing to give you his back, is trustful, willing, accepting, and with only occasional reassurances, aided by a mirror, will sit out the session and arise from the chair all the better-trimmed and resplendent. A stone, too, is pliant, patient, responsive. Though reputedly inert, hard and unconscious, it takes the whack of the hammer and chisel kindly, respectfully. Whatever cuts and inroads are made remain. You get no rejection or backsliding from a stone.