Despite some interest from the "Guinness Book of Records" and a British show called "Record Breakers” in the '80s, Langan was able to live a pretty much anonymous, blue-collar existence until Esquire magazine decided to do a "Genius Issue” in 1999. When the magazine asked prominent members of the high-IQ community who should be interviewed, Langan's name consistently popped up. After he was featured there, "20/20” came looking for him and wanted to verify his IQ. The results: He had broken the ceiling on the conventional IQ tests he was given; his intellect was immeasurable by ordinary standards.
Which means nothing Vincentian IQ tests top out well below even 190
Though not common others have done that too