The phrase «Mind the Gap» was first introduced in late sixties on London Underground to warn train passengers to exercise caution while crossing the gap between the train door and the station platform. (blogs.bajajallianzlife.com)
Neuroscientist Bryce Mander at the University of California, Berkeley, and his colleagues recruited 33 healthy adults — 18 around the age of 20, and 15 ranging from late sixties to late seventies — all with normal mental function, and asked them to memorize a list of word pairs. (scientificamerican.com)
Probably my own shortcoming entirely - I see nothing but pretentious late sixties posing from the stargate and onwards. (news.ycombinator.com)