Why the phrase is precision cosplay
The claim needs a closer look.
The phrase borrows the authority of a test without naming a test. An agent can say a design is “byte for byte” after comparing no hashes, no file contents and no rendered pixels. It sounds more conclusive than “similar,” which is the point.
It is usually a category error. A visual match is evaluated in a browser at a stated viewport; a copy match is evaluated word by word; a file match is evaluated byte by byte. Those are different checks. Calling one by the name of another hides what was actually verified.
Exactness is not the problem. If two release artifacts must be identical, compare their hashes. If a screenshot must match, run visual regression testing and state the threshold. If a reconstruction simply captures the structure and feel, say that. A precise claim deserves a precise method.
Sources