Deliberate mistake: Tim babysits his 4-year-old niece in the season 7 episode Say Goodnight, Gracie, but in season 8, which takes place the following year, Gracie and her twin sister Claire have been aged up to around 8 years old.
Home Improvement (1991)
1 deliberate mistake in season 8
Continuity mistake: This episode establishes that Tim is three years older than Jill. However, in the episode "Ex Marks The Spot" (Season 2), Tim said that he broke up with Stacy after high school, then met Jill at college. And Jill wouldn't date him unless he promised that everything was over with Stacy. If Jill is three years younger, she would have been only fifteen when Tim broke up with Stacy, not at college.
Al: Say, do you think they call it a nail gun because it shoots nails?
More trivia for Home Improvement
Question: In one episode, Tim's mother says that she raised five boys. Three of those are Tim, Jeff, and Marty, but what do we know about the other two? There's another episode where Randy mentions his uncle that doesn't talk to their family anymore.
Answer: Tim's other brothers are named Rick and Steve. They never appeared on the show, and were only mentioned in passing.
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