You've heard the saying, "the definition of insanity is doing the same thing over and over again, but expecting different results?"
Well I don't have a clever saying to define delusion, but here are three good examples:
On the night of THE DECISION, the ESPN commentator showed a graphic which displayed the results of the day's polling question: Where do you think Lebron James will play next season?
The color coded graphic showed the majority of pollees in New York believing that Lebron would play for New York. The majority of pollees in Illinois believed that Lebron would play for Chicago. The majority of pollees in Ohio believed Lebron would play for Cleveland. But the entire rest of the country? They rightly believed Lebron would play in Miami. Delusion.
Basketball star Delusion:
Lebron James thought he could build up the excitement over where he'd play next season and that no matter what he chose, basketball fans would "love" him unconditionally. He's just that good. The commentator dude brought him back to earth with real-time video of his jersey being burned in Cleveland.
And lastly, in our little tourist community where gunshots have been interrupting Sanduskian's sleep near-nightly for the past 3 weeks, the grandfather of the alleged perpetrator in the last shooting incident is "shocked" that his grandson is accused of shooting someone.
No Relative Of Mine Could Do That Delusion:
Delusion ain't just a river in South America.