As I posted there, I’ve never seen the episode in its entirety, so I don’t know if the characters ever acknowledge that it’s an actor — George Reeves — playing Superman. It’s one thing if Little Ricky thinks Superman is real, but it’s quite another if the adult characters on the show think the same thing. Were the writers suggesting that Lucy and Ricky live somewhere near Metropolis?

Update: In response to the question “Was this episode canonical? Did Superman really exist in the Lucyverse?” over at the Dial B for Blog, cboldman writes:

It was left ambiguous, so as not to disillusion any kids who saw the episode, I suppose. They never suggested that he didn’t have super-powers, but they didn’t show him doing anything unrealistic, like flying, either. And, while Ricky was always bringing home celebrities that he knew, in this case (as mentioned elsewhere), he was referred as Superman all the way through, not as actor George Reeves.