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> Someone has to build those. Well, yes? That means those "someones" are not building something else instead.

• ithkuil 10mo ago
  Yes, sometimes that's indeed an opportunity cost. But it's also a catalyst for making things possible or affordable that otherwise wouldn't be. Many technological progress are first explored in niche and luxury segments and only later fully developed for the masses with mass utility. Space exploration, motor racing sports, military, .... they all can seem like wasteful enterprises and yet a lot of new technologies come from these areas