Let's say that you really like Warburtons Bread, but I think everyone should eat only Hovis, and I happen to have power over your bread because of some kind of convoluted Bread politics I was made emperor of bread. How peeved would you be if I decided that due to the inherent uncleanness of all non-hovis Bread I would take 2 slices out of every loaf of Warburtons Bread that you bought, toast it (to burn out the inherent uncleanness of non-hovis bread), and served it up to the hovis-eaters? Or would it actually be fine for me to do that because if you can't make as many sandwiches as you'd like from n-2 slices of bread then you don't deserve any Bread at all?
... Might have gone on a bit of a flight of fancy with that last paragraph... But I stand by the first one!