Exploring Putnam's Brain-in-a-Vat Argument

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Putnam, begins his argument by stating the scientific fiction which state that, let us imagine that our brains have been removed from our bodies and are placed in a vat of nutrient which keeps our brain alive (Putnam, 1981:6). He furthermore explains that we can imagine that the machine (computer) our brains are connected to they cause illusion that everything is normal. (ibid.). In addition all the objects, people and the sky that we perceive, and all our experiences are just the result of electronic impulses travelling from the computer to the nerve endings. (ibid.). However, he start by posing doubts by asking that if our brains were in a vat, could we say or think that we were (Putnam, 1981:7). He furthermore argued that we could not (ibid.). For Putnam, it cannot be true that, if our brains are a vat and we say or think that we were, for Putnam it is self-refuting (ibid.). …show more content…

He stated the example that consider the thesis that all general statements are false (ibid.). For Putnam this is a general statement, if it is true, then it must be false, therefore it is false (ibid.). For Putnam “although the people in that possible world can think and say any words we can think and say, they cannot (I claim) refer to what we can refer to”(Putnam, 1981:8). Putnam state that people who are in the world of brain in a vat, cannot refer to anything external at all, therefore he concludes that there are no people living in brain in a vat (Putnam, 1981:10). He gave an example of reference, that let us suppose there is a planet on which human evolved, and they have no idea of a tree since trees they do not grow there, and one day the picture of a tree accidentally dropped on their planet by a spaceship (Putnam, 1981:3). For Putnam the mental image is not a representation of a tree in the way that an identical image would be for people whom trees they grow in their planet

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