[asgioiobuio]

I don't think that would work well at all. "The polar opposite to my norms" is stuff like Alex Jones and Breitbart. I won't learn anything from exposing myself to such idiocy. Dishonest clickbait is worthless, even if it comes from a diversity of viewpoints.

No algorithm is (yet) smart enough to judge the quality of journalism. Facebook shouldn't try.

[darkstar999]

This is exactly why we need to be broken from echo chambers. If you think the polar opposite of whatever you believe is conspiracy and idiocy, you are in an echo chamber. There is rational journalism for whatever is the opposite of your beliefs.