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2. Reason / E. Argument / 7. Thought Experiments

[imagining a situation to explore the principles involved]

4 ideas
Imaginary cases are good for revealing our beliefs, rather than the truth [Parfit]
     Full Idea: I believe it is worth considering imaginary cases (such as Teletransportation), as we can use them to discover, not what the truth is, but what we believe.
     From: Derek Parfit (The Unimportance of Identity [1995], p.293)
     A reaction: The trouble is that we might say that IF I were suddenly turned into a pig, then I would come to believe in dualism, but that will not and cannot happen, because dualism is false. It seems essential to accept the natural possibility of the case.
We seem to base necessities on thought experiments and imagination [Sidelle]
     Full Idea: Judgments of necessity seem always to be based on thought experiments and appeals to what we can imagine.
     From: Alan Sidelle (Necessity, Essence and Individuation [1989], Ch.1)
     A reaction: That is, the denial of this thing seems inconceivable. I would say that they are also based on coherence. The idea that we can think without imagination is nonsense.
Just as maps must simplify their subject matter, so thought has to be reductionist about reality [O'Grady]
     Full Idea: A map that is identical in all respects with that which is mapped is just useless. So reductionism is not just a good thing - it is essential to thought.
     From: Paul O'Grady (Relativism [2002], Ch.6)
     A reaction: A useful warning, when thinking about truth. It is folly to want your thoughts to exactly correspond to reality. I want to understand the world, but not if it requires being the world.
So-called 'though experiments' are just philosophers observing features of the world [Cappelen]
     Full Idea: What are called 'thought experiments' in philosophy are in effect just philosophers drawing our attention to interesting features of the world.
     From: Herman Cappelen (Philosophy without Intuitions [2012], 11.3)
     A reaction: Thought experiments are said to rely (perhaps excessively) on 'intuition', but Cappelen says intuition is irrelevant, because we are merely making judgements. It think they ARE experiments, if one feature varies while the rest is held steady.