Unpredictability. In generative art, random values give each output its difference, within the rules the artist sets.
We need randomness, which I take as the machinic correspondence to human intuition.
Frieder Nake, Frieder Nake on “Machinic” Miracles
Because the paradox of computers is that in order for them to generate something random, they will utilize a program. If you utilize the same program with the same seed, you will get to the same result.
Rafael Lozano-Hemmer, Electric Op: Cory Arcangel, JODI, LoVid, Lozano-Hemmer