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I know this is kind of silly. But anyway...

What if John Travolta had chosen to become a dentist instead of a dancer and actor?

Would "Welcome Back, Kotter" have been a hit with a different actor playing Vinnie Barbarino?

More importantly, would "Saturday Night Fever" have still been as big a hit and how would no Travolta as an actor affect popular disco culture in the late 1970s? Could any changes in the popular culture from OTL cause major changes from OTL?
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