  The Two Modes probably also come from Agrippa (Barnes 1990b: 213), and represent an attempt ‘to have a neat sceptical system compounded out of three of the Five [Modes]: dispute, reciprocity and regression’ (Barnes 1990b: 215). But Barnes finds the omission of the Mode of Hypothesis philosophically troubling, given that it ‘is a mode of the first importance to the Pyrrhonists’ (1990a: 119), and most discussions of the Five Modes mention the system of the Two Modes only in passing, especially since Sextus never employs them explicitly during his discussions of dogmatic philosophical positions.