" Unless the hole is MEANT to be square,' I said with a sudden erudition that surprised me, 'in which case, all the round pegs are the ones that are wrong, and if the ROUND hole is one that is not meant to be square, then the square ones will, no, hang on--'
'Shame,' said the historian, 'and you were doing so well. "

― Jasper Fforde , Shades of Grey (Shades of Grey, #1)