first: a great "system" hello monks, 4 me the number "0" is not definined, cause u r not able to execute a division. dividing by "0" is not defined --> a rule in the mathematic a logic and human view would say to me the "0" after "1" is "10" --> an easy and real annoying view(based on in germany calles "idiot-tests". have a lot of fun ;-)