Proof · Method
How we measure the Compression Index
Definition
Compression Index =
independent specialist baseline (working hours)
strategy1 time (working hours)
No baseline, no index. Outliers shown, not trimmed.
Definition
A specialist's estimate, divided by our time
The Compression Index is a specialist's baseline time divided by strategy1's time for the same deliverable.
Compression Index = independent specialist baseline (working hours) ÷ strategy1 time (working hours)
An index of 5 means we took a fifth of the time the specialist estimated. That is an illustration of the arithmetic, not a target or a result.
Key takeaways
- The Compression Index is an independent specialist's baseline time divided by strategy1's time for the same deliverable, both measured in working hours.
- No baseline, no index: the specialist's estimate is written down before work starts and stored with the case evidence.
- strategy1's time counts all of it: AI agent runs, strategist work, human review and Domain Fellow sign-off.
- The index measures time, not quality. Every published case also shows who accepted the work and the red-team findings.
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Method
How it is measured
- 01
Written baseline, before work starts
An independent specialist estimates the same scope in writing, by email or note, before we begin. We store it with the case evidence. No baseline, no index.
- 02
Our time, all of it
Working hours from kick-off to the accepted deliverable: AI agent runs, strategist work, human review and Domain Fellow sign-off.
- 03
Like for like
Same scope, same acceptance criteria. If the specialist's estimate covered more than we delivered, we cut the baseline to match, or we do not publish an index.
- 04
Waiting time
Time spent waiting for the client (data, approvals) is excluded on both sides or on neither.
- 05
Working days
Calendar estimates are converted to working hours at 8 hours a working day, and we show the conversion.
- 06
Reporting
Per engagement first. Then the median per engine and per quarter. Outliers are shown, not trimmed.
- 07
Published with its proof
Each index is shown with its baseline document (anonymised) and the acceptance record.
Notes
- 1The baseline document is stored with the case evidence and linked, anonymised, from every published case.
- 2Taken from our time log and the timestamps on signed approvals.
- 3The scope is stated on every case, so a reader can see what was and was not delivered.
- 4The conversion is printed beside the index, for example: 5 working days × 8 hours = 40 working hours.
- 5Every median is shown with the number of cases behind it.
- 6Anonymisation removes names, figures that identify the client, locations finer than state level, and document headers or logos.
What counts as a case
All four, or it is not counted
- 1.A written baseline from an independent specialist, dated before work started.
- 2.A deliverable the client or the specialist accepted.
- 3.Our time record for the same scope.
- 4.The client's written permission to publish, and an anonymisation pass reviewed by a Strategy Partner.
What does not count
- Internal demos
- Estimates we wrote ourselves
- Work without a written baseline
- Work the client has not accepted
Caveats
What the index does not tell you
- 01
It measures time, not quality.
Quality is shown separately: who accepted the work, the red-team findings and the Domain Fellow sign-off.
- 02
A baseline is an estimate.
Specialists estimate differently. We name the specialist's discipline and, with permission, the specialist.
- 03
Scope matters.
Our deliverable may be pre-feasibility where a specialist would deliver detailed design. We state the scope on every case. A blueprint is not bankable engineering.
- 04
Small numbers.
Early medians rest on few cases. We show the number of cases behind every median.
- 05
Hours, not calendar days.
A high index on working hours does not mean the calendar time was as short. We show both where we have them.
FAQ
Questions about the index
What is the Compression Index?
What is a specialist baseline?
Why does strategy1 publish the method?
Who chooses the specialist?
Can I see the baseline?
Do you publish slow cases?
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