Anecdotal evidence warning: Basically it's trained to feed you what it thinks you want to see. From my experience, it doesn't matter how many different channel

Anecdotal evidence warning: Basically it's trained to feed you what it thinks you want to see. From my experience, it doesn't matter how many different channels you are subscribed to, it looks at metrics from the last hour or so of watch time and recommends based on that information. You end up silo'd in a small set of refined options based on every video you watch. The best way to get a fresh perspective on Youtube is to logout or go to the trending page ... otherwise you're sitting in an echo chamber of only things you agree with... which isn't that interesting