Contrast Small Reference Pools, and Pop-Cultural Osmosis.
May lead to Germans Love David Hasselhoff or Americans Hate Tingle. This trope along with Public Medium Ignorance goes together like peanut butter & jelly. Compare with Fan Myopia, which is when the fans of a particular form of pop culture believe it to be far more well-known amongst the general public than it actually is.
From early 2011, there was speculation about Thorpe's return to swimming, fuelled by people claiming to have seen him training.
The speculations were substantiated when Thorpe spoke at a February 2011 press conference of his return to swimming after four years away, with the aim of competing in the 2012 London Olympic Games.
Pop-Culture Isolation is basically a case of pop-culture myopia of sorts, where celebrities, music genres, media or events are huge and significant in one subculture or ethnic group, but elsewhere nobody knows they exists or is indifferent to them altogether.
We're not talking about separate countries here, but the same country or region.
By the way, did you know there are people and places out there who discuss and list the tools of storytelling but have almost no knowledge of wiki editing or TV Tropes?
However, paternal pressure detracted from Ken's enjoyment of cricket, and he retired at the age of 26.
Thorpe went into the Australian Championships in Adelaide as a serious contender for selection in the national team for the 1997 Pan Pacific Swimming Championships in Fukuoka, Japan.
With a top-three finish and a specific qualifying time required for selection, Thorpe focused on the 400 m freestyle after injuries to world record holder Kieren Perkins and Daniel Kowalski; both had won Olympic medals in the event.
This isolation of pop culture can lead to such ignorance as Cowboy Be Bop at His Computer.
It's even possible for this trope to happen within the same culture.