Theory of Constructed Logic

The provocative idea that even the rules of logic (like non-contradiction: a thing cannot be both A and not-A) are not timeless, Platonic truths discovered by the brain, but are cognitive tools our minds and cultures have constructed because they are useful for survival and communication. Other systems of reasoning (dialetheism, fuzzy logic) can be constructed, showing that our "common sense" logic is one possible system among many.

*Example: "In our logic, 'the statement is true or false' seems obvious. In quantum computing, a qubit can be in a superposition—both 1 and 0 at once. The Theory of Constructed Logic suggests our everyday logic isn't the law of the universe, but a very useful mental model we built to navigate a middle-sized, slow-moving world. For the subatomic realm, we had to construct a weirder logic."*

by Abzu Land January 31, 2026

Theory of Constructed Logic

The proposition that logic itself is a human construction—not a discovery about the universe but a tool we've built for specific purposes. Different cultures, different eras, different domains have developed different logics. Classical logic, fuzzy logic, paraconsistent logic, indigenous logics—these are constructions, not revelations. The Theory of Constructed Logic doesn't claim logic is arbitrary; it claims logic is made, not found, and understanding how it's made is essential to using it well. Logic is a tool, not a truth—a tool that shapes what we can think and say.

Theory of Constructed Logic "You think logic is universal, discovered, not made. Theory of Constructed Logic says: look at history—different logics for different purposes. Classical logic for mathematics; fuzzy logic for vagueness; paraconsistent logic for contradictions. Logic is constructed, like language, like law. That doesn't make it less useful—it makes it ours, responsible to our needs, not to some imagined logical heaven."

by Dumu The Void March 1, 2026