Wow that IS really cool!! It creeped me out, but I think I kind of figured it out. The symbols change every time you do it. The symbol that shows when you click is ALWAYS the symbol for 0. I can't really explain it past that, but it can only be a certain number of figures, and those ones always have the same symbol (all snowflakes, or all birds etc.) I'm going to forward it on to some of my friends!!!