I did not know that, well, I did know that, but I was trying to be a smart ass. One more thing, while FL180 isn't always in the same place for controllers, it is for pilots. As soon as we hit 18,000' on the altimeter, we hit that little button that says "std" and 29.92 is in the window. That just became our 18,000 ft. So if we were cleared to FL180, and we climb to 18,000 (with a current alt. setting) as soon as 17,999 rolls through, and we hit the 29.92, that is all we know of 18,000'. Also, what good is reporting something at 18,000' MSL (sorry, one eight thousand) when you're gonna have to change your alt. setting to reflect FL180 as soon as you get there???
Here's another thing that kinda bothers me, when I'm flying around, whether it's in a caravan or a jet, why do some atis broadcasts report when there are clouds at 20,000'?!? Even if I'm flying through it on the way down, who cares if the ceiling is up there. Usually its something like "broken 20,000". Really??? I don't care, unless you want to clear me for the visual at 19,999! Any insight? The clear below 12,000 actually make sense and is useful.