%0 Journal Article %A Floyd, William %A Weber, Brian %A Weeks, Jeffrey %T The Achilles' heel of ? %J Experimental mathematics %D 2002 %P 91-97 %V 11 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/EXMA_2002__11_1_50529/ %G en %F EXMA_2002__11_1_50529