Resources · Validation
Checked against the books it cites.
Every figure below is read out of the validation note at build time, not typed into this page. The worked examples run as tests on each commit; a red result blocks the merge.
9 of 12 textbook cases within ±1 %
Worked examples from the books the library cites, recomputed by the engine and run as tests on every commit. The other 3 are documented differences, each with the reason quantified.
validation note §1
4 of 5 public projects inside their class band
Real plants whose capacity and all-in cost were published independently — a government study, a national survey, an owner's announcement — re-estimated from capacity alone with the out-of-the-box allowances.
validation note §3
Methods library 2026.10: 407 records second-pass checked
Every coefficient read back against the cited edition and page by a second reader. 4 records are still unchecked and the note names them.
library manifest · 2026-09-27
Where a book’s own working and the published method part company — a factor read off a chart, a substitution the book makes in its own equation, tax paid a year in arrears — the tool follows the method as written and states the gap, rather than tuning the result to the printed answer.
The full validation record — every case, every difference and why — is in the app under Help → Validation record.