@Drifter , @Simpleton , I mostly agree.
for near-ish future sci-fi it makes sense since that's the construction were used to. but for far off era's? well i think there should be more imagination- the problem is most sci-fi writers aren't scientists .
i was watching some YouTube videos about this awhile ago, and it had some crazy cool ideas since gravity and air pressure are so different in space ( among other things )
one of videos is made by "Because Science" the other is made by "Isaac Arthur" ( i don't remember the exact videos though)
@Iwizesol - If you want something sci-fi with plenty of variety you would do well to check up the webcomic Schlock Mercenary. (Both art and science improve during the decades-long run of the webcomic, but it's pretty hard science story heavy sci-fi with a comedy veneer all the way)
Hiro: "and if 1 enel equals 100 yen then..."
You just had to go there didn't you? You just had to compare money that does exist [enel] with money that doesn't [yen].
It's only made worse by the guarantee that 1 enel = 100 yen is false. Even in reality a U.S. dollar does not equal 100 yen. [Nor does any other currency.]
Why is this a recurring theme? Do most Japanese not understand "equivalent value?" Compare your money with something like a meal or rent. Don't compare real money with monopoly money.