Just listening to what you want will lead you to doubt even the facts

Studies indicate that social networks have had a strong impact on public discussion in the world. As algorithms tend to cater to user preferences, they are increasingly being exposed to opinions similar to theirs, thus preventing the discussion that is the basis of democracy. This article from the Poynter Institute suggests that this confirmation bias is reaching the point where people no longer believe in #proven facts, if these are not in line with their own beliefs.