Typically one does not engage with the material of the cassette. Unless it was being eaten by a tape player, the average consumer never gazed upon its reflective spool. To this point most media requires a certain precious handling of it, the CD, DVD and LP require the listener to hold only the edge. Perhaps speaking to the ubiquity of the digital file these days, the MP3, FLAC, WAV and others have no real handling instructions. I want to focus on the surface.