Even within my own cohort i find out things about my own time period way later, because i was geographically isolated, that i wouldn't know unless i had been like in an economically affluent or high-population density area. Like 30 years later i find it out from emulation or the internet. Kids that were literally living the same life as Ferris Bueller in 1986 might know about early online BBS's and stuff but i didn't do dialup till college in '91-'97. But I digress and the example i -was- going to say, was look at Hustle. It was a type-the-BASIC-program-yourself game in a book that i typed into a TRS-80 Model III in like 1981-2. But then we didn't know then, that it was already a coin-op game by Gremlin in 1977 or 78, until like August 30, 1998 when it was added to MAME.
So it's interesting to be out of sync on some things and not other!
Cheers!
--D