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
We’re getting close to 100 years on Dick Tracy, the comics started in 1931. Not even sure that was the first wrist communicator in fiction TBH.