Map
Agree the journey boundary, events, owners and decision in scope.
Peer route · Methodology
Root cause before recommendation. Evidence before confidence.
A practical method for keeping observed facts, calculations, assumptions, estimates and recommendations separate.
Measure
Build the baseline and show evidence quality beside performance.
Diagnose
Test patterns, alternatives and where variability enters the system.
Rebuild
Prioritise the first intervention, owner and verification points.
Evidence ladder
Observed
Present in or directly traceable to the source record.
Calculated
Derived through a documented, repeatable formula.
Assumed
A business input reviewed and approved by the accountable owner.
Estimated
An opportunity range combining evidence with stated assumptions.
Recommended
A proposed intervention subject to operational judgement.
Stop
The correct conclusion when the evidence cannot justify the next step.
A focused first conversation
A useful diagnostic narrows the decision before it widens the programme.
No operational data is needed for the initial conversation.