A delusion is a belief that is clearly false and that indicates an abnormality in the affected person’s content of thought.
– Chandra Kiran and Suprakash Chaudhury, “Understanding delusions“
When a man sees things others don’t see, the most beneficial possibility is that he is a visionary. Unfortunately, visionaries are as common as icicles in Yuma and it’s more likely the vision is the product of delusion, hallucination, or fabrication. For example, Donald Trump told a rally he “watched in Jersey City, New Jersey, where thousands and thousands of people were cheering” when they saw the World Trade Center collapse on 911. “I saw it,” he told George Stephanopoulos of ABC News. “It was on television.” Nobody else saw the thousands of invisible celebrants that Trump saw. The Washington Post, while awarding Four Pinocchios, generously characterized the claim as “another case of Trump’s overactive imagination.” That’s a politically correct way of saying “delusion.”