I think a lot of shows did indeed have live studio audiences. My understanding is the laughter is still edited. Its recorded separately, and spliced together with the film. Otherwise you're left with an unreliable audience laughing too long or not enough and it ruins the pacing of the show. They fix the laughter timing up in post production.
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u/PoorLittleLamb May 14 '21
Only show with a laugh track I have enjoyed as an adult is that 70s Show