Comment Kennita (Score 2, Interesting) 45
If we make bills different sizes, the $20 bill had better still be ATM-sized (or else buy stock in an ATM company). Oh yes -- in any case, buy stock in a cash register company. Unless we keep the bills the same size and give them all different textures, edge designs, or what-not. Maybe bills should be embossed in Braille? They wouldn't stack as compactly, but it might beat other forms of retooling.