schizoids.pl

This principle is called the catuskoti, meaning ‘four corners’. It insists that there are four possibilities regarding any statement: it might be true (and true only), false (and false only), both true and false, or neither true nor false.

• Prawda,
• Fałsz,
• Wszystko (nieskończoność),
• Nic (zbiór pusty)

We now have a fifth possibility. Let us write the four original possibilities, {T}, {F}, {T, F} and {}, as t, f, b and n, respectively. The way we set things up earlier, value of was a relation and the sets were the possibilities that each statement might relate to. But we could have taken value of as a function and allowed t, f, b and n to be the values that the function can take. And now there is a fifth possible value – none of the above, ineffable, that which lies beyond language