 The Anscombe-Copi reading treats the forms of elementary propositions as differing radically from anything we may be familiar with from ordinary — or even Fregean — grammar. It thus respects Wittgenstein’s warning to Waismann in 1929 that “The logical structure of elementary propositions need not have the slightest similarly with the logical structure of [non-elementary] propositions” (WWK, 42).