Oh no, not again!, or, How I built a time machine to save history (or at least my history grade)
by Mac Barnett
Age rating: Ages 10–13 · Children
Age rating and Christian content guidance for parents.
First published 2012
A boy named Leo builds a time machine to fix his mistakes and prevent historical disasters.
Concern Level
Clean
Virtue Level
Thin
Concern Level
Clean
Virtue Level
Thin
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Dokilit is an AI-powered content guide for Christian parents. We analyse books through the lens of faith and family, then show you the concerns, the virtues, and the conversation points that matter for your home.
Things to consider
Higher = more presentNo sexual content is present in the story.
Mild cartoonish violence occurs during Leo's time travel mishaps.
No profanity is used by the characters.
No blasphemous language is present in the book.
No substance use is depicted in the narrative.
No instances of suicide or self-harm are shown.
The story is humorous, not scary.
No occult or witchcraft elements are featured.
No LGBTQ+ themes or characters are present.
The story does not promote a non-Christian worldview.
No negative portrayals of God or Christians are included.
Virtues to celebrate
Higher = stronger presenceLeo shows some courage in facing consequences of his actions.
Christian faith is not a theme in this book.
Leo's actions are motivated by a desire to fix things for himself.
The story does not focus on themes of grace or repentance.
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