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Re:The Brain in a Vat Argument by actualdc1 on Friday December 13, 2013 @09:37AM (#6900652)
In my experience (as a student of philosophy at a strong university program), Stanford Encyclopedia of Philosophy is the go-to reference resource for such articles. Here's their version:

http://plato.stanford.edu/entries/skepticism-content-externa...

Re:The Brain in a Vat Argument by hyperpape on Friday December 13, 2013 @09:55AM (#6900745)
I think it's a slightly better article in this case. But neither one is really suitable HN. They both presuppose too much background, I think.