Fun, for a change: "Constraints on Societies Engaged in Relativistic Interstellar Travel" https://youtu.be/xXswO3yqzc0 Talk by Kevin H Knuth
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Fun, for a change: "Constraints on Societies Engaged in Relativistic Interstellar Travel" https://youtu.be/xXswO3yqzc0 Talk by Kevin H Knuth