The external reference

This is the master discipline of the course and the one that makes the others work. An external reference is a written standard, produced outside your operation, that your work can be compared against and found wanting.

Three properties, all required. It must be written down, because an unwritten standard moves to accommodate the result. It must come from outside, because a standard you wrote from your own practice can only tell you whether you are consistent with yourself. And you must be able to fail it, because a reference you always pass is a description, not a reference.

Examples, so this stays concrete. A published body of practice for a domain. A regulatory requirement. A named competitor's documented service level. A customer contract with a specific number in it. An industry benchmark with a stated methodology. A professional standard with an assessment behind it.

What does not qualify: your own historical numbers, your own internal targets, the opinion of the most senior person in the room, and best practice as recalled from a conference. All four are generated by, or endorsed by, the system being measured.

The diagnostic asks you, for each of the eight domains, what external reference you would be judged against. The blank rows are the finding, and they are usually the majority. A domain with no external reference is a domain in which you cannot be wrong, which sounds comfortable and means you cannot detect a loop in it either.