Complexity feels like intelligence until you try to use it. We start with a simple problem: as we learn more, our minds can get buried under the very connections we build. So what lets knowledge stay powerful instead of turning into a tangled archive? Our answer is reduction: the disciplined return from a big integration back to the smallest sufficient principle that preserves the causal meaning of the whole. We lay out the IIR cycle induction, integration, reduction. Induction expands...