Demodocus (Greek: Δημόδοκος) is purported to be one of the dialogs of Plato. The dialog is extant & was included in the Stephanus edition published in Geneva in 1578. It's now generally acknowledged to be a fabrication by a late sophist or rhetorician. It appears to be a combination of two separate works. The first part is a monologue (addressed to Demodocus) which argues against collective decision-making. There then follows a trilogy of dialogs (with anonymous participants) which raise three elements of doubt against common sense.