it's probably going to take humans (and/or their descendants) less time to conquer the galaxy than it took them to conquer the earth
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economic incentives to go at the highest possible fraction of c are huge. people seem to systematically underestimate long term technological possibilities by a lot and tbh i don't understand why
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Combination of linear thinking (miss acceleration), lack of imagination (ramifications often complex), lack of nerve (do you dare to conclude what the calc tells you when it is *weird*?) but also plain lack of interest in "not real" future.
End of conversation
New conversation -
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You can travel faster in clean intergalactic space compared to dusty plane of MW (pretty thin; can sidestep it). 50%c likely pretty doable, would not be surprised by much higher. Rockets for acceleration are BAD, use laser push instead.
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