using only static magnetism - impossible to stably levitate against gravity?
tocomment: I don't get it?  Why would something like below not work:        ________
        SSSSSSSS
        NNNNNNNN

    NNNNNNNNNNNNNNNNNNNN
    SSSSSSSSSSSSSSSSSSSS

Top magnets are glued to a board, a larger area of magnets are glued to the floor.  This would be in two dimensions.  Surely the magnets wouldn't have the strength to flip the board, so how is that not stable?