Consider this: I can go to Antarctica and get cash from an ATM without a glitch but should I fall ill during my travels a hospital there could not access my medical records or know what medications I am on.
Artistic qualities that once seemed undeniable don't seem so now. Sometimes these fluctuations are only fickleness of taste momentary glitches in an artist's work or an artist getting ahead of his audience (it took me ten years to catch up to Albert Oehlen). Other times however these problems mean there's something wrong with the art.