First question: Are your innovations being used on Youtube today? At what date did you "pull the switch" and go over to the DNN-based recommender systems? I'd

First question: Are your innovations being used on Youtube today? At what date did you "pull the switch" and go over to the DNN-based recommender systems? I'd say recommendations have gotten somewhat better, if a little too clickbaity still (you saw one video with a squirrel? here are ten squirrel video compilations!). Second question: Did humans at some point assign names to DNN-established clusters or vector elements or what they're called? Sometimes I get OK recommendations, but with a really bad label (for instance a 100% minecraft LPer recommended as an example of a "shooter").