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# the board was over 2 miles across
and each tile was made of marble and required two people to lift it.
(, Wed 17 Feb 2010, 11:00, archived)
# Can you estimate the strength of gravity for me?
(, Wed 17 Feb 2010, 11:01, archived)
# twentington
(, Wed 17 Feb 2010, 11:01, archived)