"You'll find they are totally obedient, taking any order without question. We modified their genetic structure to make them less independent than the original host." - Lama Su, Attack of the Clones
You must remember these are still human beings - not robots.
Order 66 is not "programmed" into them.
It is still just an order, from the head of the Republic to his grunts.
But the clones are genetically bred to be utterly obedient.
66 is the number of the devil!!!!!!!!!you are 600 short of the number some claim to be the number of the beast.
You must remember these are still human beings - not robots.well if the clones are genetically altered (We modified their genetic structure ) they are more or less programmed
Order 66 is not "programmed" into them It is still just an order, from the head of the Republic to his grunts.