We publicly document the significant corrections made to the figures, to the method or to the way they are presented. They are listed below, newest first, with their date, nature, scope and where the report came from.
01·History
Reverse chronological
9 significant corrections recorded.
EditorialParis · lieux
Council of Paris moments now have titles that say what happened
On place pages, the title of a Council of Paris moment often repeated the reason given in the session rather than what was voted. The titles were rewritten from the fact, in French and English, by a language model, then checked, with a random sample re-read: 1,109 titles across 189 places.
Source of the report: Internal initiative, while re-reading the Théâtre du Châtelet page on a phone.
Before
“A memorial voted after years of requests”
After
“Contract voted for a memorial to the 670 young Parisians who died in Algeria and the Maghreb”
EditorialFrance · subventions des communes
Grants read from a budget are called “planned”, never “paid”
For some towns, the official list of grants comes from their budget (BP), which gives what is planned for the year, not from their accounts for the past year. These amounts were presented as paid. They are now called “planned in the budget”.
Source of the report: Internal initiative.
MethodFrance · marchés publics
The main holder of a joint contract no longer changes from one update to the next
When a contract is awarded to several companies for the same amount, the company shown first could change from one update to the next (in Draguignan: MIDI.TP, then Comptoir Méditerranéen). It is now settled by its SIRET number, so it stays the same, from the national update that follows. And the page of a supplier no longer in a town's list now leads to that town's list of contracts instead of a page not found.
Source of the report: Internal initiative.
DataParis · marchés publics 2024
Twelve 2024 contracts are no longer counted twice
In 2024 the City publishes the awarded lot in its own list and the national platform (DECP) publishes the framework agreement, under another number: the same contract showed up twice. Rule applied: same amount, same notification day and a word in common in the description, the DECP line is removed. 12 pairs, €433M. The total of 2024 contracts goes from €3.18bn to €2.79bn, on the page, the detail pages and in the assistant's answers.
Source of the report: Internal initiative.
Before
2024 contracts: €3.18bn
After
2024 contracts: €2.79bn
DataParis · lieux
Investment spending on places no longer stops at the end of 2017
The City publishes the same series of programme authorisations in two datasets, split at the change of accounting plan (2009-2017, then from 2018). Only the first was read: on place pages, every operation stopped on 31 December 2017. Both datasets are now read. 24 place pages change, none goes down; the public money linked to places goes from €1,268M to €1,363M.
Source of the report: Internal initiative.
Before
Théâtre du Châtelet renovation: €2.9M, and a gap during the years of works
After
€27.8M paid out from 2018 to 2022 added
DataFrance · marchés publics
Towns' public contracts were counted seven times
To link each contract to its town, the calculation used a table with one row per town and per year: each contract was thus counted once per year of that table, seven times. There is now one row per town. Recomputed: 12,226 towns, 517,842 contracts.
Source of the report: Internal initiative.
Before
Lyon, 2018-2025: 37,331 contracts, €31.8bn
After
Lyon, 2018-2025: 5,333 contracts, €4.5bn
MethodSan Francisco · contrats
“Paid more than agreed” is no longer presented as an overrun
On the San Francisco pages, a contract whose paid amount is above the agreed amount was flagged as an overrun. On checking the 129 active contracts concerned, 98.8% of the dollars are on rows where the City's register does not add up with itself: the agreed amount is not a ceiling there. The gap is now described as more paid than the recorded base amount, without calling it an overrun.
Source of the report: Internal initiative.
Methodglobal
Method page restructuring
The /methode page was condensed into 5 clear sections (sources, transformation, enrichment, editorial choices, limits). The chart-level provenance badge now points to the public BigQuery datasets instead of a local description.
Source of the report: Internal initiative — the previous methodology page listed 12 sections, but an audit showed readers dropped after section 4.
Removal of "net contributor vs net beneficiary" framing
Panel §06 of /daily-bread showed, for each income level, a "difference" between what you pay and what you benefit from. This framing was both editorially loaded (close to political arguments) and technically questionable (inheritance, capital gains, company exits, hard-to-value public goods are not captured). Reworked into a neutral framing: "here's what you pay, here's how it's spent".
Source of the report: Direct user feedback on the misleading nature of the framing.