A proposition must communicate a new sense with old words.
The proposition communicates to us a state of affairs, therefore it must be essentially connected with the state of affairs.
And the connexion is, in fact, that it is its logical picture.
A proposition states something only in so far as it is a picture.
4.031 (2) In the proposition a state of affairs is, as it were, put together for the sake of experiment.
One can say, instead of, This proposition has such and such a sense, This proposition represents such and such a state of affairs.
4.032 The proposition is a picture of its state of affairs, only in so far as it is logically articulated.
(Even the proposition "ambulo" is composite, for its stem gives a different sense with another termination, or its termination with another system.)