Revealing mistake: At the end of Lucy and Van Johnson's dance, Ricky and everyone else clap as Lucy walks through the curtain to head "backstage', and in the next shot just as Lucy walks through the curtain we catch a glimpse of Desi Arnaz standing there waiting for his cue. Then in a few moments Ricky, Ethel, Fred, and Caroline all rush in excitedly to congratulate Lucy. (00:24:55)
I Love Lucy (1951)
1 revealing mistake in The Dancing Star
Starring: Lucille Ball, Desi Arnaz, Vivian Vance, William Frawley

Revealing mistake: At the Brown Derby, when Lucy bumps into the waiter causing him to trip and spill the tray all over William Holden, we can see that the waiter's hand is taped to the bottom of the tray for the stunt to be done efficiently. (00:15:15)
Lucy Ricardo: Ricky, I'd like you to meet my second first husband.
Trivia: It was the first to tape before a live audience.
More questions & answers from I Love Lucy





Answer: There is no reason. It's a just a silly plot device, typical of the era. Women characters were often portrayed as making uninformed assumptions or decisions.
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