Search for almost any performer and you get the same cluster of facts repeated across a dozen sites: birthday, birthplace, height, measurements, filmography. The uniformity suggests a single authoritative source. There is not one, and the way that data actually propagates explains why an error, once introduced, is nearly impossible to remove.
The four real sources
Publicity material. Studio and agency biographies are the origin of most early-career details. They are promotional documents, written to position someone, and they are not audited.
Interviews. A figure mentioned once in a magazine profile — a height, a shoe size, a hometown — becomes the permanent record, because it is the only primary citation that exists.
Official records. Sports registrations, public filings and academic listings are the most reliable category and cover a small fraction of people.
Other databases. The largest source by volume, and the most circular. Site B copies site A, site C cites site B, and after three hops the original has acquired the appearance of corroboration.
How errors become permanent
Citogenesis is the term for the loop: an unsourced claim appears on a reference site, a publication cites it, and the reference site then cites the publication as its source. The claim is now sourced to something that only exists because of the claim.
Height is the classic case. Publicity heights are routinely inflated by two to five centimetres, and once in circulation the figure outlives every correction. The same applies to birth years, which are quietly adjusted early in careers and then defended by a decade of citations.
What distinguishes a maintained index from a scraped one
| Signal | Maintained | Scraped |
| Edit history | Visible, per change | None |
| Unknown values | Marked as unknown | Filled with a guess |
| Contributors | Identifiable accounts | Anonymous bulk import |
| Correction route | A discussion page or contact | Nothing |
| Coverage pattern | Deep on some, thin on others | Uniformly shallow |
That second row is the quickest test available. A database that never says “unknown” is not more complete than the others — it is less honest about what it does not have. Wiki-structured entries such as Rhea Chakraborty Feet leave fields blank when there is no record, which tells you something useful about the fields that are filled.
The long tail is where databases diverge
For the fifty most famous people in the world, every database agrees, because the facts are checked constantly. Accuracy falls away sharply beyond that. Regional film industries, television presenters, athletes outside the major leagues and musicians below a certain profile are where coverage becomes patchy and where a maintained index earns its keep.
This is also where the databases differ most in what they choose to record. A general encyclopedia entry for a performer covers career and filmography, while a specialist record such as Shriya Saran Feet covers one attribute in depth; specialist indexes record the attribute they are organised around and leave the rest to the general reference. Neither is trying to be the other.
Checking a fact properly
- Find the earliest instance, not the most recent. Search the claim with a date restriction.
- Check whether the citations trace to one origin or to several independent ones.
- Prefer records with a bureaucratic reason to be accurate — a sports registration over a press biography.
- Treat any self-reported physical measurement as approximate.
For casual reading none of this matters. For anything published, it does — a repeated figure is not a verified one, however many sites carry it.
