Objectivism, where logic goes to die

It seems that so many Objectivists worship logic because it is so far above them that it might as well be a god. In practice, Objectivist "epistemology" is often based solidly on circular logic. Whenever I point out their circular logic to them, they either stare blankly or make a snide non-response. One such person genuinely did not understand the difference between "A is A" and "A; therefore, A."