From 2008: the first original philosophical argument I remember making: Searle: "all purely syntactic systems lack subjective experiences." Searle: "I have subjective experiences." So Searle: "I am not a purely syntactic system." (modus tollens, 1&2) The only system that Searle has knowledge about the subjective experiences of is himself. So if Searle is not a purely syntactic system, he has no knowledge of what it is like to be a purely syntactic system, He cannot therefore cannot assert premise 1. (5 & the knowledge account of assertion ). If Searle is a purely syntactic system, (1) is false. (by 2) Therefore premise (1) is either unwarranted or false. (by 6&7) (These days I wouldn't use infallibilist knowledge as the baseball bat I did; I'd go at him with probabilism instead. And I'd do something against Searle's odd dichotomy between representational machines who are 'pure' syntax vs those wh...