This Is Epistemology. J. Adam Carter

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there is nothing that was the thinker's reason for believing these things. This might seem strange in general or it might seem false to the case of normal perceptual knowledge and justification. If someone presses us to explain, say, why we think that there's a pig in the path, we might say that we believe this for very good reason – we see that there is one standing before us. If someone asks us why we think that it is a pig, we might say that it looks pink, that it has a certain shape, that it has a distinctive and striking smell, etc. Even if we're generally skeptical of the Premise Principle, we might think that in the case of perception our experiences do provide us with reasons that help to justify our beliefs. We might think that a way to respond to Davidson would be to challenge his No Content View.

      2.67 If the Content View is correct, we have our answer to Davidson's argument. Although experiences are distinct from beliefs, they are sufficiently like beliefs in that they have representational content and can support beliefs in much the way that beliefs do in reasoning. Thus, just as it wouldn't be arbitrary to conclude that John is married from the premise that John isn't a bachelor, it wouldn't be arbitrary to judge that, say, the tomato you see is red and bulgy if your experience represents the tomato as being red and being bulgy.

      1 Santa Claus is coming to town.

      2 Susanna Siegel wrote Murder on the Orient Express.

      2.69 Our beliefs sometimes misrepresent the world. They might, as with (1), present the world as containing things that do not exist. They might, as with (2), present existing things as having properties that they don't have. We saw that it was difficult for a naïve realist to account for the possibility of illusion and hallucination, but there is no special difficulty in understanding the possibility of having propositional attitudes like belief that misrepresent how things are. Once we are open to the idea that experiences are like belief in that they also have representational content, we have more resources for trying to explain the possibility of misrepresentation in experience. If the Content View is correct, the content of an experience accounts for the fact that things look or appear or seem a certain specific way to an individual who has that experience. We can thus account for the possibility of things appearing to be ways that ordinary things are not.

      2.70 Let's tie the threads together. Recall from earlier that we distinguished between two foundationalist views:

      Cartesian foundationalism: something stops the regress of justification by constituting a justifier for our foundationally justified beliefs iff this is something distinct from a belief that provides the thinker with certainty that her foundational belief is true.

      Modest foundationalism: something stops the regress of justification by constituting a justifier for our foundationally justified beliefs iff this is something distinct from a belief that provides the thinker with adequate albeit fallible support for her foundational belief.

      We want to know whether experience can stop the regress of justification and provide us with non‐inferential justification for our perceptual beliefs. It might be a good idea to split this question into two parts.

       2.9.1 On Cartesian Foundationalism

      2.71 The Cartesian foundationalist thinks that nothing can stop the regress of justification unless it provides certainty. It's important to distinguish between two kinds of certainty, psychological and evidential:

      Psychological certainty: A proposition is psychologically certain for a thinker iff they cannot doubt to even the slightest degree whether it is so.

      Evidential certainty: A proposition is evidentially certain for a thinker iff the thinker's belief in that proposition could not be mistaken given the thinker's evidence.

      These kinds of certainty can come apart. If we have epistemic certainty without psychological certainty, we suffer from a kind of confidence deficit – we should have more of it. (Imagine that someone has just constructed a proof but lacks the confidence to believe that they've solved a tricky mathematical problem.) If we have psychological certainty without evidential certainty, we suffer from a kind of confidence surplus – we should have less of it. (Imagine that someone is a member of a cult. They believe outrageous things on the word of a charismatic liar and nothing can shake their conviction.) The Cartesian foundationalist thinks that we need evidential certainty to stop the epistemic regress. Can experience provide it?

      2.72 Many philosophers have thought not. They might offer this argument in support of their position:

       An Epistemological Argument from Error

      P1. The evidence that experience gives us in a case of hallucination doesn't make it evidentially certain that our beliefs about the external world are true.

      C. So, experience doesn't give us evidential certainty in the case of hallucination or perception.

      The argument's first premise seems right. If I'm hallucinating a candle, there needn't be any candle in the vicinity for my experience to have the conscious character that it does. A complete description of my experience

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