@RussellA @Josh
How Are Hinges
True?
Hinge propositions,
like the earth has existed for more than ten minutes or "I have two hands” —aren’t
true in the way we typically think of propositions being true (i.e., through evidence, justification, or correspondence to reality). Wittgenstein’s point in OC is that hinges are the bedrock of our epistemic practices—they’re what we don’t doubt to even start asking questions or justifying anything else (OC 341-343). So, their
truth isn’t about being proven; it’s about their role in our
forms of life.
Hinges are
true in a practical, functional sense—they’re the scaffolding we rely on to play our language games. In OC 94, Wittgenstein says, “I do not explicitly learn the propositions that stand fast for me. I can discover them subsequently like the axis around which a body rotates.” They’re true because they’re embedded in how we act and think, not because we’ve epistemologically validated them. For example,
things don’t vanish randomly (OC 342) isn’t something we test - it’s what lets us test other things.
Their truth comes from being immune to doubt within our system. In OC 115, he writes, “If you tried to doubt everything, you would not get as far as doubting anything. The game of doubting itself presupposes certainty.” Hinges are true in the sense that they’re the ground we stand on—doubting them unravels the whole game, like pulling the tablecloth out from under a dinner party.
Traditional
truth often means a proposition matches reality (e.g., “snow is white” is true if snow is, in fact, white). Hinges don’t work that way. “The earth exists” (OC 99) isn’t true because we checked; it’s true because our entire way of living—building houses, farming, launching rockets - assumes it. Their truth is more like a lived certainty, not a verified fact. This is very similar to the rules of chess that allow the game to be played.
Justification, as an epistemological practice, stops at hinges. Wittgenstein says in OC 204, “Giving grounds, however, justifying the evidence, comes to an end;—but the end is not certain propositions’ striking us immediately as true, i.e., it is not a kind of seeing on our part; it is our acting, which lies at the bottom of the language-game.” So, if hinges aren’t epistemologically justified, what kind of
truth do they have?
If justification is epistemological, hinges live in a pre-epistemic space. Their truth is a kind of certainty that’s more basic—almost instinctual or animal, as Wittgenstein hints in OC 475: “I want to regard man here as an animal; as a primitive being to which one grants instinct but not ratiocination.” The truth of “I have hands” (OC 153) isn’t argued for—it’s a certainty I live with, like breathing. It’s true because it’s part of the scaffolding of my existence, not because I epistemologically proved or justified it.
How can you have a conviction (OC 102) that's not an expression of something you believe is true? Hinges are true is a matter of pragmatics or a way of acting, it's a different language game. Again, like the rules of chess. Someone might ask you "Is it true that bishops move diagonally?" and you reply, "Yes," but does this mean that it's true in an epistemological sense? No,
OC isn't a finished work, so we don't know which passages would have been left in or eliminated.