Signature principle
Make the structure understandable on both sides — a model, a diagram, a decision that a domain expert and a machine can each read without a translator.

Radical clarity is clarity taken to the point where nothing important is left implicit. The abstract thinkers can build something correct and unreadable at the same time — a model only they can follow. That is not a model of the business; it is a private artifact. Radical clarity is the discipline of making the work land completely for the people who have to check it and act on it: plain language, sharp definitions, one idea named clearly rather than five ideas blurred together, and the why made as visible as the what. The word radical matters because half-clarity is the usual failure. A diagram that’s roughly right, a rule that’s mostly documented, an agreement that’s understood “well enough” — each leaves a gap where misunderstanding lives. Radical clarity means openheid van zaken: full openness. What is agreed, what is modeled, how it is measured — all explicit, all in the open, none of it hidden inside a tool or a head. It is a two-audience test: the same structure must be readable by a domain expert (visual, in their words) and by a machine (structured markdown, YAML, rules). If either side needs a translator, clarity has failed. Structure is what makes this possible from one source: say it once, clearly, and render it in the register each reader needs. Sharpen how you communicate, not just what you model — a radically clear model invites correction, while a murky one hides its own mistakes.
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