The disjunctive theory of perception claims that we should understand statements about how things appear to a perceiver to be equivalent to statements of a disjunction that either one is perceiving such and such or one is suffering an illusion (or hallucination); and that such statements are not to be viewed as introducing a report of a distinctive mental event or state common to these various disjoint situations. When Michael Hinton first introduced the idea, he suggested that the burden of (...) proof or disproof lay with his opponent, that what was needed was to show that our talk of how things look or appear to one.. (shrink)

Mental internalists hold that an individuals mental features at a given time supervene upon what is in that individuals head at that time. While many people reject mental internalism about content and justification, mental internalism is commonly accepted regarding such other mental features as rationality, emotion-types, propositional-attitude-types, moral character, and phenomenology. I construct a counter-example to mental internalism regarding all these features. My counter-example involves two creatures: a human and an alien from Pulse World. These creatures environments, behavioral dispositions and (...) histories are such that it is intuitively clear that they are mentally quite different, even while they are, for a moment, exactly alike with respect to whats in their heads. I offer positive reasons for thinking that the case I describe is indeed possible. I then consider ways in which mental internalists might attempt to account for this case, but conclude that the only plausible option is to reject mental internalism and to adopt a particular externalist alternative a history-oriented version of teleo-functionalism. (shrink)

Some cognitive states — e.g. states of thinking, calculating, navigating — may be partially external because, at least sometimes, these states depend on the use of symbols and artifacts that are outside the body. Maps, signs, writing implements may sometimes be as inextricably bound up with the workings of cognition as neural structures or internally realized symbols (if there are any). According to what Clark and Chalmers [1998] call active externalism, the environment can drive and so partially constitute cognitive processes. (...) Where does the mind stop and the rest of the world begin? If active externalism is right, then the boundary cannot be drawn at the skull. The mind reaches – or at least can reach --- beyond the limits of the body out into the world. (shrink)

Certain empirical results suggest a way of challenging two natural and widespread assumptions about the mind. One assumption is about the relations between perception and action. This shows up in the widespread conception of perception and action in terms of input and output, respectively. Perception is conceived as input from world to mind and action is conceived as output from mind to world. The other assumption is about the relations between mind and world. It influences various opposed views about whether (...) the contents of the mind are in principle independent of the outside world. (shrink)