FranzOren wrote:
I had related fixed, false belief throughout my childhood and teenage years.
Sounds like you were paranoid, or something along those lines.
If you have prosopagnosia (aka "face blindness") then you are like a certain person who posted on WP some years ago who would watch reruns of the original Star Trek, and couldnt tell Checkov from Sulu because "they are both dark haired guys with similar hair cuts". When most folks would immediately see that the two Enterprise crewmen "are not even of the same race", much less look alike.
Another WP person explained how they once got lost in a building, and would have to ask directions of successive people. And it turned out that the successive ladies she kept asking were "the same person". She would go in circles, and then bother the same person again and again not realizing that it was the same person because she was face-blind.
Most folks are wired to zero in on faces (it as if your brain switches to finer grain film, or to smaller pixels, on a human face than it uses on the rest of the landscape). Folks with prosopagnosia seem to lack that special brain circuitry, and thus dont lock in to the fine differences between human faces.
If you have Fregoli than you have no trouble telling Nicholas cage from John Travolta, but you're convinced that John Travolta IS Nicholas Cage with a lifelike replica of John Travolta's face deliberately put on the front of his head. And that that you're living in the movie "Face-off" for real. Not the same thing.