first rule of auditorium acoustics: never listen to anything along a room symmetry axis. in other words, it's ALWAYS better to sit somewhat to the left or to the right in a movie theatre.
yes, folks, he's always this fascinating.
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i know.
why?
because most standing waves and other acoustic phenomena occur along these.
Thats good to know Odeon, 
Wait until he starts factoring the enclosed space's dimensions in order to predict the location of frequency specific nodal behaviors, too.
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for Odeon.
(I always thought that the average person could
see these things, as well. It was a long time before I knew that I was a little odd)