I know that if you are like me, you have found yourself in a discussion where you know the other person is so wrong it is laughable. The urge is to quickly and emphatically set them straight with the “facts”.
Here is my favorite example from Dale Caaregie as to why that may not be the most prudent thing to do...
"Carnegie was attending a banquet one night given in Sir Ross’s honor, and during the dinner, the man sitting next to him told a humorous story that hinged on the quotation “There’s a divinity that shapes our ends, rough-hew them how we will.” The raconteur mentioned that the quotation was from the Bible. He was wrong, and Carnegie knew it positively. By his own admission, he appointed himself as an unsolicited and unwelcome committee of one to correct the storyteller. The other man stuck to his guns. From Shakespeare? Absurd! That quotation was from the Bible. And the man knew it. Frank Gammond, an old friend of Carnegie’s, was seated to his left. Gammond had devoted years to the study of Shakespeare. So the storyteller and Carnegie agreed to submit the question to the expert. Mr. Gammond listened, kicked Carnegie under the table, and then said, “Dale, you are wrong. The gentleman is right. It is from the Bible.” On their way home that night, Carnegie said to Mr. Gammond, “Frank, you knew that quotation was from Shakespeare.” “Yes, of course,” he replied, “Hamlet, act five, scene two. But we were guests at a festive occasion, my dear Dale. Why prove to a man he is wrong? Is that going to make him like you? Why not let him save his face? He didn’t ask for your opinion. He didn’t want it. Always avoid the acute angle.” It taught Carnegie a lesson he never forgot."
from "How to Win Friends and Influence People in the Digital Age" by Dale Caarnegie