pan <pan### [at] syixcom> wrote:
> Round manholes fit whichever orientation you drop them.
> Round manholes cover (usually) cyclindrical access spaces which are
> better able to resist ground pressures and (again) permit putting 
> thiings
> into them without concern for orientation. (Round pegs/square 
> holes:
> square pegs/round holes).

  You left out the fact that a round cover will not fall into the manhole
no matter how you might screw up opening it.

-- 
                                                          - Warp

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