The analogy for "Codex Solis" for me is a Duchamp piece called "With Hidden Noise," which I think is one of his greatest contributions to the idea of art. It is two plates of metal with a ball of twine in between, and there's some French and English words on the top and bottom of it, and right before he closes up the two metal plates with four bolts, he gives it to his friend and patron Walter Arensberg, and tells him, "Put something inside and don't tell me what it is." That's what Arensberg does, and supposedly nobody's ever opened it. ---Michael Oatman