In the conjuring arts, there are elusive sleight-of-hand moves known within the fraternity as "knacky", so called because grasping the mechanics isn't enough to explain how to perform them: that part is almost real magic, a "feel" no-one can teach. Jazz in motion. It occurs to me something similar happens with writing: no digital software will ever replicate the creative flair and inspiration behind the most beguiling prose. As Joan Didion once put it, "style is an instrument I play by ear."