Truls Ljungström > Status Update

Only in this way can the proposition be true or false: It can only agree or disagree with reality by being a picture of a situation

The proposition in picture-writing can be true and false. It has a sense independent of its truth or falsehood. It must be possible to demonstrate everything essential by considering this case.

If sign and thing signified were not identical in respect of their total logical content then there would have to be something still more fundamental than logic.

Is the only evidence here once more that extremely dubious "self-evidence"? Let's take a question quite like that one, which however is simpler and more fundamental, namely the following: Is a point in our visual field a simple object, a thing?

Once more: logic must take care of itself. A possible sign must also be capable of signifying. Everything that is possible at all, is also legitimate.