>>118706840Ehhh... Unless you have a source for that, that ain't true since the strip uses modern cars, VCRs and Calvin wants his parents to get cable among other nuances.
The strip has a bit of a timelessness to it. Apart from a few things (like Watterson referencing kiddie matinees, Calvin knowing who Astro Boy is, lack of computers, etc) that kind of date the author's sentiments, the strip can be read as modern and not locked in the past.