The idea that Moore begs the question (i.e. assumes the conclusion in a premise) was first raised by W. Frankena. Since analytic equivalency, for two objects X and Y, logically results in the question "Is it true that X is Y?" being meaningless (by Moore's own argument), to say that the question is meaningless is to concede analytic equivalency. Thus Moore begs the question in the second premise. He assumes that the question is a meaningful one (i.e. that it is an open question). This begs the question and the open-question argument thus fails.