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Re:The Theory of Interstellar Trade (1978) by gravitas on Thursday December 31, 2020 @08:39AM (#25592556)
Without having read anything but your comment:

What about the actual vs. perceived wear and tear on the ships(?) transporting the goods, do they experience 5 days worth of repair/upkeep (fuel?) needs, or 5 minutes? Maintaining the transport (vehicle, ransible, teleporter, whatever) has some sort of cost - TANSTAAFL.

Re:The Theory of Interstellar Trade (1978) by the_af on Thursday December 31, 2020 @08:49AM (#25592643)
The passage of time is the same for the transport and its crew, i.e. 5 minutes.

It's only the stationary observer (not travelling with the ship) who experiences 5 days.

Re:The Theory of Interstellar Trade (1978) by elil17 on Thursday December 31, 2020 @09:07AM (#25592778)
Most of the paper assumes zero fuel and maintenance costs