The same fact can appear wherever readers need it while being maintained in one place. An artwork’s dimensions may be needed on its detail page, in a collection, and in a search result. Maintaining those dimensions separately makes a correction dependent on someone remembering every copy. A canonical record gives the fact one authoritative home. Each display can select the amount of information its reader needs while retaining the same underlying meaning. Pages can have different layouts while agreeing on the facts they present about the same thing.
Correct the record and let each display use it.
An artist's work may appear in a gallery, a featured collection, and a search result. If its dimensions are maintained separately in each place, a correction can leave three different answers. One maintained record lets each view present the same facts in an appropriate form. In an illustrative artwork record, changing the dimensions from an incorrect measurement to the verified one should update every display that reads those fields. The thumbnail might omit dimensions altogether, while the detail page shows them fully. Omitting a fact for a compact view is different from keeping a conflicting value.
Consistency does not require identical layouts. A small preview and a detailed page have different jobs. Keep the facts together and let their presentation change with the context, so an update improves every place that depends on it. The rule also applies to titles, availability, links, and project descriptions. Decide which record supplies the facts before deciding where to display them.
Put it into practice.
Choose a fact that appears in more than one place and trace every public use back to its source. Maintain the fact in the authoritative record for that item. Keep presentation choices, such as image size or text length, separate from the fact itself. Make a scoped correction and verify the index, detail page, and search result. If one of them requires a second editorial correction, examine why it is maintaining a separate copy.
How many places must change when one fact changes?