All of this reminds me of the early days of the TiVo. It had a recommendation system that it would use to fill your DVR with shows you would like. If you reco

All of this reminds me of the early days of the TiVo. It had a recommendation system that it would use to fill your DVR with shows you would like. If you recorded a show in a new category (which gave the show an implicit positive rating), it would often go off the rails and find everything in that category. The first time I recorded "The Simpsons", it filled up my DVR with cartoons over the course of the next week before I noticed what it was doing. We seem to be basically no better than that sort of logic.