Excerpt from this article:
In psychology, the idea that everyone is like us is called the “false-consensus bias.” This bias often manifests itself when we see TV ratings (“Who the hell are all these people that watch NCIS?”) or in politics (“Everyone I know is for stricter gun control! Who are these backwards rubes that disagree?!”) or polls (“Who are these people voting for Ben Carson?”).
Online it means we can be blindsided by the opinions of our friends or, more broadly, America. Over time, this morphs into a subconscious belief that we and our friends are the sane ones and that there’s a crazy “Other Side” that must be laughed at — an Other Side that just doesn’t “get it,” and is clearly not as intelligent as “us.” But this holier-than-thou social media behavior is counterproductive, it’s self-aggrandizement at the cost of actual nuanced discourse and if we want to consider online discourse productive, we need to move past this.
What is emerging is the worst kind of echo chamber, one where those inside are increasingly convinced that everyone shares their world view, that their ranks are growing when they aren’t. It’s like clockwork: an event happens and then your social media circle is shocked when a non-social media peer group public reacts to news in an unexpected way. They then mock the Other Side for being “out of touch” or “dumb.”
What happens instead of genuine intellectual curiosity is the sharing of Slate or Onion or Fox News or Red State links. Sites that exist almost solely to produce content to be shared so friends can pat each other on the back and mock the Other Side. Look at the Other Side! So dumb and unable to see this the way I do!
Sharing links that mock a caricature of the Other Side isn’t signaling that we’re somehow more informed. It signals that we’d rather be smug assholes than consider alternative views. It signals that we’d much rather show our friends that we’re like them, than try to understand those who are not.