The diagnostic rule — run the tests in order, stop at the first failure — sounds procedural. It's the taxonomy's most valuable edge.
Most problems present as alignment problems: the roadmap misses, the numbers disappoint, execution looks sloppy. But run the tests and you'll often find the coordination failure is downstream of a translation failure — the roadmap drifted because customer understanding never reached it — and that translation failure is downstream of a modeling failure, because the understanding that got stuck was itself a guess. Fixing alignment on top of a missing model just aligns everyone to the guess.
The reverse error matters too. If your AI pilots convert to production at a healthy rate, modeling isn't your constraint — pouring more money into understanding is fixing an open gate while translation or coordination stays shut. The taxonomy isn't just for finding the problem; it prevents you from overpaying to fix the wrong one.
Five groups. Fourteen cells, not fifteen.
The failures recur across five groups — every population whose model governs whether enterprise value gets created. Technologists own the model of how technology is built and monetized. C-level leaders own the funding decision, and each executive runs a different decision model. Business units own the operating reality that corporate strategy makes assumptions about. Customers own the buying decision — the model most companies describe most vaguely. And the marketplace owns the external dynamics that decide which positions get rewarded.
The marketplace is also the taxonomy's one deliberate hole. There is no "can't work with the marketplace" cell, because a market is a system you read and align to, not a counterparty you work with. Fourteen cells, not fifteen — and the missing one is a claim, not an omission. Every bottleneck except one is ultimately a people-or-process problem; the single exception is the one force you calibrate.