@TeamYouTube,it's cool that you can see a preview of a video before you click on it. But can you tell me why I watch 8 seconds of a preview and all of a sudden it's in my "recently watched" like maybe I saw it, didn't like it, and now u are gonna make recommendations based on it.
Playbacks that meet our high watch time and view standards will be added to your watch history. To view, delete, or pause watch history, please check out this Help Center article: https://goo.gl/ExjUAs . Hope this helps clarify.