http://www.perlmonks.org?node_id=1220808


in reply to Asked to put a square peg in a round hole, I would:

There's a good reason for driving square pegs into round holes. The high pressure at the corners makes the peg really stay in place, similar to how square wire-wrapping posts really get a great connection to the wire. The Salt Lake Tabernacle has square pegs that have been sitting tight in their round holes for 150 years.