How do I talk to people who are "wrong"? Don't burn me yet

[ngauger]

I found during my stint volunteering at the Railroad Museum, that if you own the explaination it sugar coates it and everyone is happier.

If I knew something that was incorrect I would start out my information with one of the following:

I thought the FL9s......

That's interesting.. I was told that the FL9s.................

OK... I heard that the FL9's were........

or my favorite:
Neat!! But I was told years ago, the FL9s were.............

With those intros, you're blaming an obscure third party for possible mis-information, therefore beginning a conversation with any aggression or bad feelings directed away from the 2 or 3 participants. It worked every time!!