They drowned the first kid who played "Billy Pilgrim - Age 8" (Bob 'Tiger' Hemond), so they had to use one who could actually swim to play "Billy Pilgrim - Age 8 Underwater" (Joshua Hill Lewis). That's why the first one isn't shown in any further films in his filmography.
shareI never looked at those credits. Hmm, interesting, the latter was the kid in that Tom Sawyer movie playing his smarmy Cousin Sidney!
shareIt was common in those days.
OH SPOILER ALERT!
Wait, what? The child was actually killed during the filming of the movie? Where did you read/hear about that? I feel like that would have been news, even in the '70's.
shareWhat a cute little story you made up there.
Bull Crap!!
Schrodinger's cat walks into a bar and doesn't.