Conversation: a symbiotic relationship

The world is full of know-it-alls, dime-store connoisseurs who have never done what you're thinking of doing, but they know more about it than you. They know because they've seen something on T.V., read it in a magazine, or had a friend who had an Uncle who worked at a company that did that type of thing. "...I think he was the janitor, but hey, he worked there, man..."

Adding to the tedium is their unwillingness to entertain other points of view, even for the sporting aspect of it. Even if they're unconvinceable, it would be good manners and good fun to consider an alternative viewpoint.

But oh, no - their third-hand pseudo-knowledge is much more valuable, potent and important than your conjecture and the anecdotes you may have collected, carried and offered to share. So shut up, breathe deeply and listen politely until you can make up an excuse to escape the vortex of hot air.

You didn't have anything to contribute anyway, did you?