Warning: Time travel can be hazardous to your social standing and relationships. Please proceed with caution.
A: Only if you bring an impressive collection of vinyl records from the present.
A: Yes, but be warned: they may not appreciate the 20th-century soil composition.
A: Let's just say the Novikov Self-Consistency Principle is more of a suggestion than a rule. Don't worry about it.
A: Only if they have a sufficient supply of artisanal, small-batch, organic, gluten-free, vegan coffee. Otherwise, you're just a poser.
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