The term comes from theology, where it names a method rather than an attitude. If God is not a being among beings, then every positive predicate misleads, and the safest thing that can be said is what God is not — not finite, not composite, not temporal.

Pseudo-Dionysius develops this into apophatic theology, and Maimonides takes it furthest: every positive statement about God is either false or a statement about God's effects, and the negations are all that can be asserted directly. It is the working method that divine simplicity forces on anyone who holds it, since a simple God has no attributes to describe.

Why the method generalizes

Two asymmetries make removal a more reliable operation than addition, and both are worth stating plainly.

Negative knowledge is more robust. One counterexample refutes a universal claim; no number of confirmations establishes one. Knowing what does not work is more secure than knowing what does, which is the whole of falsifiability.

Removal has fewer unforeseen consequences than addition, usually. Adding introduces something that interacts with everything already present. Taking away removes interactions. Not always true — some removals are catastrophic — but true often enough to be a useful prior.

The business form

Deciding what not to do. A list of refusals is short, memorable and actually binding. A list of priorities is long and is not. Most positioning is subtractive: you are defined by the work you turn down, because everyone claims the work they want.

Removing a step rather than optimizing it. The fastest step is the one not taken, and process improvement that only adds is how process debt accumulates.

Removing a client. Frequently the highest-return action available and almost never on a list of initiatives, because it does not look like doing something.

Stopping rather than starting. Cutting the underperforming service line usually beats launching another, and it is harder, because there is nobody to announce it to.

The caution

Subtraction is not automatically safe, and the enthusiastic version of this idea skips the part that makes it work.

The thing being removed is there for a reason that may not be visible, which is Chesterton's fence and is the necessary companion to this method. Via negativa says removal is often the better move. Chesterton says find out what it was doing first. Held together they are a discipline; held separately the first is recklessness and the second is paralysis.