Right. This reminds me of Enigma not mapping a letter to itself. Perfect isn't quite the name for this, it's constrained with the outward appearance of being un

Right. This reminds me of Enigma not mapping a letter to itself. Perfect isn't quite the name for this, it's constrained with the outward appearance of being unpatterned and being very patterned having only 48 arrangements of a unique solution. When we see simple patterns, we think things are not truly random, hence fake random for Spotify playlists.