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>> be sure to watch the "history of the sitcom" tomorrow night on cnn. >> beautiful thing about the sitcom, it has provided so much joy in times of uncertainty. >> there's a lot of pressure in the 1960s. this notion of new products and everything being new, this kind of brave new world. >> everything's about the future and modernizing. yes, it's all bright and shiny and you get cars that look like spaceships. but then it's a scary thing, what does the future hold. >> air force general curtis lemay suggested that we bomb north vietnam vac into the stone age. >> "history of the sitcom" is tomorrow 9:00 p.m. here on cnn. thank you so much for sharing part of your morning with us, "smerconish" is up next. don't go anywhere. we'll see you again in one hour. ♪