Don't underestimate the ability of people to ignore evidence if it challenges their personal beliefs. I know way too many retired engineers who refuse to believ

Don't underestimate the ability of people to ignore evidence if it challenges their personal beliefs. I know way too many retired engineers who refuse to believe the science because a certain TV network has convinced them that it's a political hoax. That attitude even trickles down to more local issues -https://www.mprnews.org/story/2018/02/20/3m-vs-minnesota-water-pollution-pfc-chemical-trial-primer https://www.mprnews.org/story/2018/02/20/3m-vs-minnesota-wat... here in MN for example. Many of the people I refer to above are 3M'ers and believe that the State is extorting 3M. A couple of them are very vocally opposed to anyone installing water filters because of this.