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========== Suppose we’re working with aliens who live
near Alpha Centauri to build a wormhole teleporterso we can go visit them - for dinner, or interstellar
diplomacy, or whatever. Of course we’llneed to be able to talk with them about what
to make each side of the portal out of, howbig to make the various pieces, and so on.
But since we’ve never been to Alpha Centauri,and they’ve never been here, this is tricky
– I mean, if you tell me to make you anarc that’s 300 cubits long, and I don’t
know what a cubit is, you’ll probably getan arc that’s not exactly what you were
hoping for .So we’ll have to build, from the ground
up, an easily sharable way of communicatingabout the universe, where distances and such
are based on ideas, rather than specific artifacts....