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- 64 Can droids be shut down manually?
- 52 When did Bilbo and Frodo learn that Gandalf was a Maia?
- 50 Could the Industrial Revolution be delayed indefinitely? Or is it inevitable once a certain point in development is reached?
- 49 Did Shadowfax go to Valinor?
- 43 When will we send floating probes to Venus?
- 33 Story about a book/writing invading our reality
- 30 How to wrap the Moon in plastic to make her a giant, supported by the atmospheric pressure, greenhouse
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