I used to have a girlfriend who had a very annoying habit. It went like this. I'd tell a funny/interesting story (seriously, I've got, like, three), everyone would laugh or express amazement. She'd say "Yeah, but is that true?" Ruined it every time.
The truth in stories is a slippery concept. Particularly if you are relying (as we'd like to, in the modern super-connected and super-social world) on other people to spread your story for you. How can you be sure that they are telling your story in the right way?
Now, one of the most powerful modern myths ever created is Star Wars. You may have heard of it. A story so powerful that it survived Jar Jar Binks. But how well do you know the plot? Here is a brilliant video of someone trying to explain the plot of Star Wars without even having actually watched the trilogy.