motivated reasoning

I read a little about motivated reasoning recently which is about how people use information to support pre-conceived points of view, sometimes political and sometimes ethical viewpoints. In our modern world, information is filtered by social media which presents us with news which our friends like or which is similar to what we already liked. This leads to us being presented with more of the same and our opinions are reinforced. We hang out with like-minded friends, in real life and online, reinforcing our opinions. What we read and what we hear tends to support what we already want to believe. We live in a post-facts world where scientific truth is no longer trusted and where conspiracy theories and social media dominate.