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twanvl comments on The Cognitive Science of Rationality - Less Wrong
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More accurately, the map should worry about mapping its future states, to plan the ways of setting them up to reflect the world, and have them mapped when they arrive, so that knowledge of them can be used to update the map (of the world further in the future, including the map, and more generally of relevant abstract facts).
(More trivially, there are quines, programs that know full own source code, as you likely know.)
Something has to interpret the source code (e.g. "print"). The map never equals the territory completely. At some point you'll get stuck, any self-replication is based on outside factors, e.g. the low entropy at the beginning of the universe.
The quine does not include the code for the function "putStrLn".
Every program runs on some kind of machine, be it an intel processor, an abstract model of a programming language or the laws of the universe. A program can know its own source code in terms it can execute, i.e. commands that are understood by the interpreter.
But I am not sure what point you are trying to make exactly in the above comment.
Vladimir Nesov was criticizing lukeprog's phrase "world out there" claiming that the "map in your head should accurately reflect the world, not just the part of the world that's "out there"". I agree, but if you are accurate then you have to admit that it isn't completely possible to do so.