Daniel Dennett thoroughly debunks Penrose' argument in Chapter 15 of Darwin's Dangerous Idea. Quoting reviewers of a Penrose paper ... "quite fallacious," "wron

Daniel Dennett thoroughly debunks Penrose' argument in Chapter 15 of Darwin's Dangerous Idea. Quoting reviewers of a Penrose paper ... "quite fallacious," "wrong," "lethal flaw" and "inexplicable mistake," "invalid," "deeply flawed." "The Al community [of 1995] was, not surprisingly, united in its dismissal of Penrose's argument."