ARCHITECTURE
'(<a href="http://www.j-archive.com/media/2011-10-14_DJ_23.wmv">Kelly of the Clue Crew does a demonstration with a piece of paper.</a>)  Paper can be used to illustrate an architectural concept; holding the edge doesn't inspire much confidence in its structural integrity, but curve it, & you get one of these projecting structures with a simple machine in its name'
a cantilever