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- 54 Were ancient ships named?
- 47 Would one atom of antimatter be lethal if annihilated inside the brain?
- 34 Dyson sphere with mirrors
- 33 Would a civilization on a planet with no natural Uranium-235 NEED to first achieve fusion before it can build nukes?
- 31 Roleplaying deity indication
- 30 Did the Elves do mathematics?
- 28 In what language did Túrin converse with Mím?
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