“No matter how cynical you become, it’s never enough to keep up.”-Lily Tomlin
You could say that about knowledge: no matter how much you know or think you know it’s never enough to keep up. But if you stick with conventional wisdom you are really going to fall behind. I recall growing up in the 50s and 60s that smoking was mainstream and never criticized by the establishment authorities.
In the same era Rachel Carson exposed the danger of then current pesticides like DDT in her book Silent Spring.
Many doctors were smokers. People smoked everywhere, in your face. It was not until the U. S. Surgeon General issued his report that the tide turned. But into the 90s for example smoking was still allowed on airplanes. Imagine the conditions if you got a seat assignment in the smoking section in the back of the plane for a Trans-Atlantic flight.
Fortunately for me and my family, my Irish Methodist grandfather saw cigarettes and alcohol as the devil’s tools, calling cigarettes “coffin nails.” He also liked to say that cancer will cure people of smoking.
Ten or twenty or fifty years from now we may well have come to accept the evil of these recently introduced institutional commercialized global poisons and be astonished at conventional ignorance of this.