Well, there was the one guy who said he could only watch active 3D, and that passive gave him a headache. I didn't even know that was a thing. I know some people get headaches from 3D overall, and some folks from only active, but never the other way 'round.
One thing he did not know, however, was that one of the movie trailers they were playing on the demo unit had the L/R reversed. So anyone attempting to watch it would have seen a very disorienting 3D effect that probably cost them sales. The fact that no one noticed was the surprising part. When I mentioned it to him, that clip had been playing for months. I even made him flip the glasses upside down so he could see the difference. They've since fixed it, which is frankly surprising in itself. I would have thought that, had he mentioned it to anyone, they would have just ignored it.
In general, though, I see the same sort of thing I see throughout the store.. no real technical knowledge of the product. I'm sure he was baffled as to why I walked up so close to the screen to find out at what angles it started to ghost (passive display). I knew I couldn't just ask him. I'm sure the phrase "FPR" is Greek to him, much less how it actually works.
Welcome to Rivendell, Mister Anderson.