I think lasers are pretty wack when you think about them through this lens. A small, wand-like object in your hand can make light appear from seemingly nowhere. If it’s powerful enough it can set things on fire or blind people. Not to mention larger ones like laser cutters or the LLD, used to destroy missiles midflight. Thats sure to blow some feudal peasant minds
Ok, fair enough. But I thought of another one- even into the 20th century, a huge number of battlefield injuries were automatic amputations. We don’t necessarily have to do that now in a lot of the same injuries.