The word algorithm left computing some time ago and has been busy in boardrooms ever since, usually as shorthand for a repeatable process that produces results without waiting for inspiration. Jon McNeill puts it on the cover of a business title, and our catalogue shelves it accordingly.
The length is the most revealing detail. Four and a half hours is short for business non-fiction, and short usually means a book with one argument to make and no intention of padding it out to fill a hardback. That is a format decision as much as a writing one, and it tends to produce the books people actually finish.