Season four of The Simpsons opens with a look forward…if you buy that weird theory that The Flintstones and The Jetsons take place at the same time, with the Jetsons and their neighbors living well above the devastated world below that got knocked back to the stone age of, you guessed it, the world of Bedrock and the Flintstones.
I think that’s a load of hooey, but the Flintstones were on the Simpson’s couch in the opening credits.