

77,302,580 people is not half of America. It is 49.8% of the folks that bothered to vote.
More usefully,
In the 2024 presidential election, 73.6% (or 174 million people) of the citizen voting-age population was registered to vote and 65.3% (or 154 million people) voted according to new voting and registration tables released today by the U.S. Census Bureau.




Looking into it, it seems that perhaps it was not notable until recently. This is likely a limitation of my searches and popular understanding. Does anyone know of ancient Greek writing on the subject? (Perhaps I am too quick to discount the trained memorization of bards and storytellers of old, which I understand typically used memorization and not Total Recall?)
Funes the Memorious was written long after the camera was invented.
The Wikipedia pages on Eidetic Memory and Hyperthymesia cover different aspects, but neither cites anything older than “Funes the Memorious”. “Total Recall” is also used for the ability, but also does not appear to have a long history.
Unrelated but fun: ‘Photographic Memory’ The story of how we stored digital photographs