  According to Albert, the problem with arguments of the sort Auriol gives is that they rely on a questionable assumption, namely: if there are no real polyadic forms or properties, then there is nothing in extramental reality to correspond to our relational concepts. This assumption would be true, he suggests, if our conceptual framework displayed an exact isomorphism to the structure of the world. But it does not, and hence there is no reason in principle why a polyadic concept cannot have something non-polyadic corresponding to  it.[16]  In making this sort of reply, Albert aligns himself with a medieval tradition of rejecting the view that for every distinct type of concept there is a distinct type of entity. This view is often associated in medieval philosophy with Plato and his followers, and by the time of Ockham it is regarded, somewhat hyperbolically, as the source or root (radix) of the greatest errors in philosophy. “To multiply beings according to the multiplicity of terms” Ockham says “is erroneous and leads far away from the truth” (Summa Logica I, c. 51 in Opera Philosophica i, 171; cf. Loux, 1974, 171).