From: "MikkelFJ" <mikkelfj-anti-spam / bigfoot.com> > Why is the following not valid: > (some boolean expression).not > true.not > > Mikkel It doesn't appeal to me, and I see no need for it to be included as OO purism. If such were required, I think (True|False)Class.inverse would fit the bill, but I don't see it soving any problems. Gavin