What is SIPOC diagram workflow?

SIPOC diagram workflow is a concept in personal epistemology: Define clearly what goes into each workflow and what comes out. Without precise input-output specification, you cannot chain workflows, automate steps, or diagnose failures.

Example: You have a writing workflow that begins with 'a topic.' But when you sit down to write, you stall — because 'a topic' is not a usable input. It is a gesture at an input. You redesign the entry specification: the input is now a specific question, three source references, a target word count, and a publication date. Suddenly the writing moves. The constraint was never creativity. The constraint was that you were trying to run a process on undefined input — like calling a function with no arguments and wondering why it returned nothing.

This concept is part of Phase 41 (Workflow Design) in the How to Think curriculum, which builds the epistemic infrastructure for workflow design.