Thanksgiving - S1-E9
Factual error: The scene where Kitty is making peanut butter celery for Thanksgiving appetizers; she is using Skippy brand peanut butter and the packaging is not from the 70's, it's the current packaging. (00:05:10 - 00:06:05)
Factual error: Red takes the gang to a World Wrestling Federation event; in the '70s, it was the World Wide Wrestling Federation.
Prom Night - S1-E19
Factual error: In the scene where Kitty and Midge are talking about work there is a box of Krispy Kreme doughnuts on the counter. The logo that is on the box was not used on Krispy Kreme boxes until the mid 80's.
Chosen answer: He isn't. Time moves slowly in the show because they didn't want it to turn into "That '80's Show". In the first episode, he say's he's 17 but the second episode was his 17th birthday so he must have been 16. The first 12 episodes are set in 1976, the next 2 seasons are set in 1977, the next 3 seasons are set in 1978, and the remaining shows take place in 1979 with the final show on Dec 31, 1979 when Eric must be 20 as he turned 17 in 1976.
Myridon