A formal fallacy due to confusing the knowing of a thing (extension ) with the knowing of it under all its various names or descriptions (intension ). We need to define two terms here to understand this fallacy fully: intensional and extensional .
Examples:
- _The lady in the pink dress is Julia Roberts.
The reporter thinks the lady in the pink dress drives a Prius.
Therefore, the reporter thinks Julia Roberts drives a Prius ._
Synonyms: hooded man fallacy, masked man fallacy, intensional fallacy