4.022 A proposition shows its sense.

A proposition shows what is the case if it is true. And it says that this is the case.

Puzzling, since a proposition considered as a sentence does not show its sense, and considered as a proposition or understood thought then the concept of showing does not seem to fit it. A proposition, we might say, is a sense. 4.022 suggests that a proposition is like a Fregean assertion sign followed by a literal picture, one that is impossible to misinterpret because it requires no interpretation. It (somehow) shows its sense (correct interpretation). Is this a reduction of Frege’s philosophy of language?

Others are puzzled by this remark too. Black (p. 165) quotes Wisdom calling it “a mistake.”