Telegraph and wire transfers were a thing 100 years ago, you could say “Everyone have a telegraph at home. Private communication, for example orders to your bank to wire money, uses codes/cyphers that can be decoded if the third party was smart enough”.
You’d have to go back before the discovery of electricity, and even then you could make an analogy with lighthouses (which isn’t really a stretch, as fiber optic cables can be described as point-to-point light houses), and most people at most periods are probably familiar with the idea of talking in codes.
Technology isn’t really that hard to explain. Social change is much harder. Try explaining to someone from 1920 that the US had a black president and nothing catastrophical happened, or that all professions today are open to women and you’d have a much harder time.
Telegraph and wire transfers were a thing 100 years ago, you could say “Everyone have a telegraph at home. Private communication, for example orders to your bank to wire money, uses codes/cyphers that can be decoded if the third party was smart enough”.
You’d have to go back before the discovery of electricity, and even then you could make an analogy with lighthouses (which isn’t really a stretch, as fiber optic cables can be described as point-to-point light houses), and most people at most periods are probably familiar with the idea of talking in codes.
Technology isn’t really that hard to explain. Social change is much harder. Try explaining to someone from 1920 that the US had a black president and nothing catastrophical happened, or that all professions today are open to women and you’d have a much harder time.
Try explaining the LGBT++++++ rights movement.
one + is enough actually, unless you’re making fun of the concept of inclusion.
This may sound radical, but listing every gender and sexual minority is more than a simple acronym can realistically handle.