I do not have the impression that mainstream economists subscribe to a Platonic concept of "real" values. (Or maybe I'm just confused about what you mean.) Can you cite an example of this (i.e., a paper or article that describes or assumes such a concept)?
I have in mind the regular use of "real" figures in economics (i.e. those that are "inflation-adjusted," as well as those based on "purchasing power parity" etc.). These concepts are in principle dissolvable -- when citing some "real" figures, economists could address the questions of what exact index was used to adjust the value, what would be the implications of choosing a different index, how much the figures vary under different more or less reasonable definitions of indexes, what political and bureaucratic incen...
We've started a habit of creating periodic Bitcoin threads to confine discussion thereof to those threads and prevent excessive proliferation of Bitcoin topics in the discussion section. Here is a link to the last one, which links the other discussions. Lot's to talk about, and another bounce in Bitcoin's value (up to 33 then down to 24), so share your links and thoughts!