The billable hour and the pyramid
Placement: a judgment drawn from the evidence, open to correction (dispute it). As a rung 0 model it carries the family its value is moving toward.
The model
- Definition
- Professional services priced by hours and leveraged on junior staff.
- What presses on it
- Reports of Big Four graduate hiring cuts in the UK.
- What still holds it up
- McKinsey attributes its headcount fall to attrition. Held on watch.
- Stops working when
- The pressure above is the case against it. A stated end condition for retiring models is not yet written.
Evidence
Companies 1
Evidence items 1
Grades 0A 1B
Latest dated 2025-05-29
Counter-evidence 1
Evidence items 1
Grades 0A 1B
Latest dated 2025-05-29
Counter-evidence 1
The three labels
0. Fights · loop gain negative. The curve shrinks what it charges for (seats, hours, heads, words, clicks).
Toward: Selling the finished work · money lands in the outcome, not the tool or the hours.
Learning loop · use, data, better product, more use.
Same rung and family
Named companies 1 companies · grade per item
| Company | Claim | Date | Gr | Source |
|---|---|---|---|---|
| McKinsey & Company US · incumbent · best B |
McKinsey's headcount fell from a peak of about 45,100 at end of 2023 to about 40,000 by May 2025, a decline of more than 10% over roughly 18 months; the company itself attributed this to normal attrition and performance-review firings, not AI, though outside commentators (e.g. Paytm's Vijay Shekhar Sharma) speculated AI was a driver | 2025-05-29 | B | Fortune |
Counter-evidence Reversals, failures and disputes
| McKinsey itself did not attribute its headcount reduction to AI; it cited normal attrition and performance reviews, undercutting a direct causal claim | 2025-05-29 | Fortune |
Sources 1
Fortune fortune.com · 2025-05-29