Will, Understanding, Deity

As has been previously discussed, Descartes' concept of Deity entails the existence of Evil, which, in turn, requires the thesis that Will and Understanding are not identical.  In contrast, Spinoza's concept does not entail that existence, which, allows him to posit that every Perception is Volitional, i. e. involves an affirmation of the existence of its object.  On that basis, error is due to incompleteness, not to unclarity and indistinctness.  Accordingly, while Descartes seeks, via convincing proof, the free assent to the proposition that his God exists, Spinoza's project, via exhaustive explanation, is that the Deity the existence of which is affirmed, is one that is adequately understood.  Implicit in the latter is, therefore, the contention that Descartes' concept of Deity is inadequate.