What does UAP mean?
“Unidentified anomalous phenomena” is an umbrella term for observations that cannot be immediately identified with the information available. Depending on the agency and era, the working definition has emphasized aerial, airborne, transmedium, or more general anomalous observations. The label does not tell us whether the underlying event was an aircraft, balloon, bird, satellite, atmospheric effect, sensor artifact, classified program, adversary platform, deception, fabrication, unknown natural phenomenon, or something genuinely outside current technical expectations.
That distinction sounds elementary. It is also where a remarkable amount of public discussion goes off the rails. An unresolved record is sometimes treated as positive evidence for an extraordinary origin. The opposite mistake is treating every unresolved record as evidence that the witness was incompetent. Both approaches destroy information.
The useful position is more boring and more powerful: preserve the uncertainty until the evidence reduces it.