Ayer's Moorean Paradox

Moore's open question defies informative analyses of GOOD to provide such an analysis (of the form "to be good is to be F") which passes the following test: Can I intelligibly ask whether something, which is F, is also good? If such a question is intelligible, Fness cannot be identical to goodness. Even if all the good things are F, their goodness is not their Fness, though their goodness may be in virtue of their Fness. Ayer kickstarted the 20th century noncognitivist tradition by accepting Moore's conclusion that GOOD cannot be identical to any complex property. But instead of following Moore to the conclusion that GOOD must be a simple, nonnatural, sui generis property, Ayer proposes that GOOD is no property at all, and that attributions of goodness are not attributions of a property to objects, but rather expressions of approval.