> The most common is a slow hardening of one’s opinions and perceptions that I consider a form of mental decline. These people are often susceptible to propagan

> The most common is a slow hardening of one’s opinions and perceptions that I consider a form of mental decline. These people are often susceptible to propaganda and conspiracy. Maybe similar to people who always do the same exercise to keep in shape, and over time their body optimizes for that exact training so it becomes less effective, I wouldn't be surprised if our opinions become hardened because we thought the same patterns over and over. But old people falling into propaganda and conspiracy theories? I have no other explanation for that besides mental decline. Younger people fall for those too, but many of them don't have the best mental condition to begin with.