Keep in mind, this does not mean that Mitt Romney has never changed positions. He has many, many times. It merely means that Romney has analyzed the human race and determined that, as a species, they are not capable of much consistency. And in an effort to mimic the human condition as closely as possible, it is that mediocre level of consistency that has been programmed into his software.
Romney: 'I've Been As Consistent As Human Beings Can Be' [Business Insider]