On May 5, 2007, at 4:47 PM, Robert Dober wrote: > Yes but > 2 < 10 > while > 2.to_s > 10.to_s Ah, I was missing the context of 'sorted keys'. It seems to me that the desire to have sorted keys and to also have keys that are not comparable would be an indication that something isn't quite right, either the design is wrong or there are some bugs to be removed. Gary Wright