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Posts by Sigma Ori‭

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Q&A Could a civilization without access to computers have cryptography?

There's a person who has enough working knowledge of our current real-world methods of cryptography (e.g. knows how a few modern algorithms work and could implement one or two from scratch). That ...

12 answers  ·  posted 8y ago by Sigma Ori‭  ·  last activity 7y ago by Sigma Ori‭

Question technology security
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Q&A Could a dryad species be scientifically plausible?

On a fantasy-themed planet with Earth-like humans and plants, over a very long period of time, a dryad-like species has evolved. Dryads look mostly like regular humans, but they have a few qualitie...

2 answers  ·  posted 8y ago by Sigma Ori‭  ·  last activity 8y ago by Sigma Ori‭

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Q&A In a spinning Dyson ring, would objects not touching the surface experience gravity?

I have a world inside a Dyson ring with a radius of ~1 AU, complete with humans, animals, plants, clouds, and Earth-like atmosphere. The ring is spinning at a particular angular speed, giving the i...

12 answers  ·  posted 6y ago by Sigma Ori‭  ·  last activity 6y ago by Sigma Ori‭