Even the cogito and the premises of the Third Meditation proofs of God are subject to doubt when the mind is not actively attending to them clearly and distinctly.

Again, the italicized segment marks an addition to the original statement of Arc 1. Let’s call this an ‘Unbounded Doubt’ interpretation, because this kind of interpretation construes hyperbolic doubt as unbounded. More precisely, the Evil Genius Doubt is (on this reading) unbounded in the sense that it undermines all manner of judgments – even the cogito, even the premises of the Third Meditation proofs of God – when the mind is no longer attending to them clearly and distinctly. Insofar as the