In any case, I didn't intend to make an assertion whether this is a one side problem, but highlight that not all participants are exposing themselves to all information. Borrowing the most neutrally or bi-partisan phrased positioning of the problem from the research I linked above:

"Republicans preferred to read news reports attributed to Fox News and to avoid news from CNN and NPR. Democrats and liberals exhibited exactly the opposite syndrome—dividing their attention equally between CNN and NPR, but avoiding Fox News. This pattern of selective exposure based on partisan affinity held not only for news coverage of controversial issues but also for relatively 'soft' subjects such as crime and travel."

I intended to relay a concerning metric illustrating this problem, to motivate a step back and ask what can be done to address that "‘Possessing understanding’ cannot be parenthetical."

---

> If you think that, you're a partisan that has tuned out the opposing viewpoint :-)

FWIW, I watched exhaustively, and on Fox News.