Conspiracy Theories and Mainstream Thinking

I received an email from a retired chemist who asked me to consider the proposition that:

"Those who ridicule 'conspiracy theorists', or anyone who may hold a quite different radical viewpoint to mainstream thinking, are essentially closed-minded and rather naïve. Oddly, these people are in many cases scientists."

After due consideration, the view I retain is that, although some people do spend an inordinate amount of time debunking theories that others spend an inordinate amount of time concocting, most of us must content ourselves with ridicule, in the interest of saving time.