 What was especially upsetting about Russell’s paradox was that there seemed to be no intuitively satisfactory way to repair set theory in a way that could lay claim to being as obvious and/or merely a matter of logic or meaning in the way that Frege and the Positivists had hoped. Various proposals were made, but all of them seemed simply tailor-made to avoid the paradox, and seemed to have little independent appeal (although see Boolos, 1971, for a defense of the “iterative” notion of set). Certainly none of them appeared to be analytic. Indeed, as Quine notes: