One thing I don't like the recommendation system is that it offers videos I already watched and even bookmarked. It also offered videos from people I subscribed

One thing I don't like the recommendation system is that it offers videos I already watched and even bookmarked. It also offered videos from people I subscribed but this is OK-ish because some accounts have hundreds or even thousands of videos. Basically, all recommendation system are based on one hypothesis: I know more about your preference than yourself. I can't say I agree with it.