““The drive to tune out opposing ideas can be explained by psychology's principles of selective exposure theory and confirmation bias, both being impulses people use to avoid cognitive dissonance, or the stress that occurs when an individual is confronted with evidence that contradicts their beliefs. This is why a conservative turns on Fox News and a liberal prefers MSNBC. What they're turning in for has less to do with receiving the news of the day than reinforcing their preconceived notions of how the world operates.””