His view is that normal, rational, intelligent people... can have fictional stories in their heads about how things work. It takes energy and focus and research to fix these wrong stories, so often we live with them or don't recognize them.
Many times I've been casually talking with someone, say something, then realize that doesn't make any sense. My wrong story made sense in my head, but not when I speak it out loud.
By practicing the scientific method, we can gradually weed out the wrong stories in our heads.
Now I'm going to re-read `The Demon-Haunted World`