Why can't there be a Giant Lever on the side that inputs a variable into the Magic Algorithms that you can adjust. Up down, left or right, whatever you want to call it. Why would you do this - even if people never touch it: because at least people KNOW there's a decision-tree at play here.

Also there MUST be some randomization or more generalized content introduced. And I'm not talking Trending Now or Hit Songs That Just Came Out. I'm looking at you, YouTube and Facebook. Sometimes I actually want new stuff and it keeps dragging me back into a virtual rabbit hole.