The mezzanine is the lowest balcony in a theater.
The answer is very simple: superstition. The number 13 is considered to be unlucky and is omitted for that reason in buildings.
http://www.flickr.com/photos/pasdecontraintes/418865514/sizes/o/
Is kinda like a court but its all white ecept for the lines....
Floors are for walking on, supporting other structures, pretty basic stuff. Dirt is and was likely the first flooring material, probably stone(s) came next. Floor coverings do just that, they cover...