The Problems and Solutions exhibits a thorough-going critique of Proclean metaphysics, starting with the principle that all that exists proceeds from a single cause, proceeding to critique the Proclean triadic view of procession and reversion, and severely undermining the status of intellectual reversion in establishing being as the intelligible object. Damascius investigates the internal contradictions lurking within the theory of descent as a whole, showing that similarity of cause and effect is vitiated in the case of processions where one order (e.g., intellect) gives rise to an entirely different order (e.g., soul). --