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<h2 class="hd hd-2 unit-title">Map of Lecture 24</h2>
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<p>Our penultimate lecture is action packed. We will discuss a second argument that consciousness is not a physical phenomenon, evaluate both it and the knowledge argument, and make some connections between our discussion of consciousness and other topics. We will end with some considerations that suggest that the problem of consciousness is misconceived. Strap yourself in.</p>
<p>To read: Chalmers’ “<a href="https://studio.edx.org/asset-v1:MITx+24.09x+3T2015+type@asset+block@23_chalmers_the_hard_problem_of_consciousness.pdf" target="_blank">The Hard Problem of Consciousness</a>”, and Michael Tye’s “<a href="https://studio.edx.org/asset-v1:MITx+24.09x+3T2015+type@asset+block@24_tye_the_puzzle_of_transparency.pdf" target="_blank">The Puzzle of Transparency</a>”.</p>
<ul>
<ul>
<ul>
<li>Chalmers’ Dualism: In which we will see the second argument against physicalism based on the phenomenon of consciousness.</li>
<ul>
<ul>
<ul>
<li><a href="/courses/course-v1:MITx+24.09x+3T2019/jump_to_id/b60fca5e5f5043cd9fe9356c27221349" target="_blank">Argument Z</a>: The argument stated.</li>
<li><a href="/courses/course-v1:MITx+24.09x+3T2019/jump_to_id/a7edc673e4f44ee3a5390c9c11d446a6" target="_blank">A Common Thread</a>: This argument has a lot in common with previous arguments we’ve seen…</li>
<li><a href="/courses/course-v1:MITx+24.09x+3T2019/jump_to_id/c8192d587d034b66aa31de340478544b" target="_blank">Argument Z = The Modal Argument</a>: In which the present argument is linked with some things Jackson said in his paper.</li>
</ul>
</ul>
</ul>
<li>Evaluating the Arguments Against Physicalism: So, all in all, what do we think? </li>
<ul>
<ul>
<ul>
<li><a href="/courses/course-v1:MITx+24.09x+3T2019/jump_to_id/bae2a0deb6754404a5002111b40a21c7" target="_blank">Evaluating the Knowledge Argument</a>: Pro: compelling thought experiment. Con: complicated to derive desired conclusion.</li>
<li><a href="/courses/course-v1:MITx+24.09x+3T2019/jump_to_id/fd8bab02eeb147c1b1799e70361b0518" target="_blank">Evaluating Argument Z</a>: Pro: Nice and straightforward. Con: disputable premises.</li>
<li><a href="/courses/course-v1:MITx+24.09x+3T2019/jump_to_id/aecc77e019264b0bb7a19687fd7f7e77" target="_blank">The Trouble with Epiphenomenalism</a>: Why it’s hard to accept the conclusion of the arguments against physicalism.</li>
<li><a href="/courses/course-v1:MITx+24.09x+3T2019/jump_to_id/6e886dbc3f8344769bd284e9d4422016" target="_blank">Dualists</a>: Where are they now?</li>
</ul>
</ul>
</ul>
<li><a href="/courses/course-v1:MITx+24.09x+3T2019/jump_to_id/070c5935366c46b8b91ae3afd8445863" target="_blank">Physicalisms</a>: The connection between different versions of the thesis we call “physicalism”.</li>
<li><a href="/courses/course-v1:MITx+24.09x+3T2019/jump_to_id/e46dc3261ccf4650929483d447084188" target="_blank">Externalism and Consciousness</a>: We have discussed externalism about cognitive mental states, like believing that it's raining, and perceptual states, like seeing a tomato. What about externalism about conscious experience?</li>
<li>Transparency: Now for a new topic: some considerations due to philosopher Michael Tye, which suggest that this whole business about the hard problem of consciousness might be a confusion…</li>
<ul>
<ul>
<ul>
<li><a href="/courses/course-v1:MITx+24.09x+3T2019/jump_to_id/b397972520d74216baf7a9788a7f4b1b" target="_blank">The Chalmers/Nagel Pictue</a>: There is a certain picture of how the mind and the world relate underlying what both Chalmers and Nagel say about the problem of consciousness…</li>
<li><a href="/courses/course-v1:MITx+24.09x+3T2019/jump_to_id/69f013e02f55447ca066720e1ed7d249" target="_blank">Consciousness is Nothingness</a>: Is the Chalmers/Nagel picture right? Let’s perform a little experiment.</li>
</ul>
</ul>
</ul>
</ul>
</ul>
</ul>
<p></p>
<p>You can download the Lecture 24 slides <a href="/assets/courseware/v1/aa4f6428ede924b9e41c139ada4218c4/asset-v1:MITx+24.09x+3T2019+type@asset+block/24.09x_Lecture_24_Slides.key.pdf" target="_blank">here</a>.</p>
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<h2 class="hd hd-2 unit-title">Chalmers' Dualism: Argument Z</h2>
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<h1>Chalmers’ Dualism</h1>
<p>We’ve seen one argument from consciousness that physicalism is false; here is another. The most recent version is due to philosopher David Chalmers, but, as we will see, it is an argument with some history.</p>
<p>By the end of this part of the lecture, you should be clear on what the argument is, exactly, and how it relates to Descartes’ argument for dualism.</p>
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Problem: zombies
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<legend id="672e7c55e2f246e8b20e63c81e66f06d_2_1-legend" class="response-fieldset-legend field-group-hd">A zombie</legend>
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<h2 class="hd hd-2 unit-title">Chalmers' Dualism: A Common Thread</h2>
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Problem: common thread
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<legend id="92a6fb6b768048168ec72ef39b32641d_2_1-legend" class="response-fieldset-legend field-group-hd">A common thread that runs through arguments D3, P, and Z is that:</legend>
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<input type="radio" name="input_92a6fb6b768048168ec72ef39b32641d_2_1" id="input_92a6fb6b768048168ec72ef39b32641d_2_1_choice_2" class="field-input input-radio" value="choice_2"/><label id="92a6fb6b768048168ec72ef39b32641d_2_1-choice_2-label" for="input_92a6fb6b768048168ec72ef39b32641d_2_1_choice_2" class="response-label field-label label-inline" aria-describedby="status_92a6fb6b768048168ec72ef39b32641d_2_1"> Each argument has as its conclusion the denial of physicalism.
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<h2 class="hd hd-2 unit-title">Chalmers' Dualism: Argument Z = The Modal Argument</h2>
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Problem: viable strategy
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<p>The following would <i>not</i> be a viable strategy for resisting argument Z.</p>
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<h2 class="hd hd-2 unit-title">Evaluating the Arguments Against Physicalism: Evaluating the Knowledge Argument</h2>
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<h1>Evaluating the Arguments Against Physicalism</h1>
<p>We’ve got two arguments on the table. What do we think? Is one better than the other? Do we accept them both? Accept one, reject the other? Reject them both? You should have some opinions by the end of this part of the lecture.</p>
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<h2 class="hd hd-2 unit-title">Evaluating the Arguments Against Physicalism: Dualists: Where are They Now?</h2>
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<p>In case you are wondering, here is what Chalmers and Jackson now think about these arguments.</p>
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<h2 class="hd hd-2 unit-title">Physicalisms</h2>
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<h1>Physicalisms</h1>
<p>Back in Lecture 14, we distinguished two versions of physicalism. We have another: our official statement of physicalism from Lecture 23. It is worth thinking about how these are related. You should do that after watching the video below.</p>
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<h2 class="hd hd-2 unit-title">Externalism and Consciousness</h2>
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<h1>Externalism and Consciousness</h1>
<p>Remember externalism, from Part 3? We discussed externalist views about cognitive states, like knowing that it’s fall in Cambridge, believing that one owns a sofa, intending to go the pub, and so on. We also, briefly, discussed externalism about perceptual states, like seeing Nilanjan or hearing a duck. These states are conscious states (at least typically), and are clearly not intrinsic. What about other conscious perceptual states, like seeing blue, which are much better candidates for being intrinsic? We briefly consider the question below. Do you think that externalism could be correct for consciousness in general?</p>
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Problem: should not be assumed
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<h2 class="hd hd-2 unit-title">Transparency: The Chalmers/Nagel Picture</h2>
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<h1>Transparency</h1>
<p>Here we begin the last topic of our course—what the philosopher Michael Tye has called “the puzzle of transparency”.</p>
<p>People who take the puzzle very seriously think that philosophical discussions of consciousness typically get off on the wrong foot. By the end of this part of the lecture you should have some sense of why.</p>
<p>This is subtle and tricky, so don’t rush!</p>
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<h3 class="hd hd-2">Video: The Chalmers/Nagel Picture, Part I</h3>
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Problem: the Chalmers/Nagel conception
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<p>Which of the following is <i>not</i> a tenet of the Chalmers/Nagel conception of consciousness?</p>
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<input type="radio" name="input_8a3ccd376b2448eda72a0139fe485a03_2_1" id="input_8a3ccd376b2448eda72a0139fe485a03_2_1_choice_0" class="field-input input-radio" value="choice_0"/><label id="8a3ccd376b2448eda72a0139fe485a03_2_1-choice_0-label" for="input_8a3ccd376b2448eda72a0139fe485a03_2_1_choice_0" class="response-label field-label label-inline" aria-describedby="status_8a3ccd376b2448eda72a0139fe485a03_2_1"> Creatures who share a scientific conception of the world must have highly similar conscious experiences.
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<input type="radio" name="input_8a3ccd376b2448eda72a0139fe485a03_2_1" id="input_8a3ccd376b2448eda72a0139fe485a03_2_1_choice_1" class="field-input input-radio" value="choice_1"/><label id="8a3ccd376b2448eda72a0139fe485a03_2_1-choice_1-label" for="input_8a3ccd376b2448eda72a0139fe485a03_2_1_choice_1" class="response-label field-label label-inline" aria-describedby="status_8a3ccd376b2448eda72a0139fe485a03_2_1"> Conscious experience is one of the most mysterious phenomena in the universe.
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<input type="radio" name="input_8a3ccd376b2448eda72a0139fe485a03_2_1" id="input_8a3ccd376b2448eda72a0139fe485a03_2_1_choice_2" class="field-input input-radio" value="choice_2"/><label id="8a3ccd376b2448eda72a0139fe485a03_2_1-choice_2-label" for="input_8a3ccd376b2448eda72a0139fe485a03_2_1_choice_2" class="response-label field-label label-inline" aria-describedby="status_8a3ccd376b2448eda72a0139fe485a03_2_1"> We have substantial knowledge concerning the character of our own conscious experience.
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<input type="radio" name="input_8a3ccd376b2448eda72a0139fe485a03_2_1" id="input_8a3ccd376b2448eda72a0139fe485a03_2_1_choice_3" class="field-input input-radio" value="choice_3"/><label id="8a3ccd376b2448eda72a0139fe485a03_2_1-choice_3-label" for="input_8a3ccd376b2448eda72a0139fe485a03_2_1_choice_3" class="response-label field-label label-inline" aria-describedby="status_8a3ccd376b2448eda72a0139fe485a03_2_1"> Perception only tells us what our <em>experience</em> of satsumas is like, not what <em>satsumas</em> are like.
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<h2 class="hd hd-2 unit-title">Transparency: Consciousness is Nothingness</h2>
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Problem: a reply
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<p>Which reply might Tye give to Chalmers&#8217; and Nagel&#8217;s claim that consciousness is the most mysterious phenomenon in the universe:</p>
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<p>In our last lecture (sob!), we will continue our discussion of transparency, so don’t worry too much if it seems confusing at the moment. One more to go; see you there!</p>
<p>(For the last lecture, have another look at Michael Tye’s “<a href="https://studio.edx.org/asset-v1:MITx+24.09x+3T2015+type@asset+block@24_tye_the_puzzle_of_transparency.pdf" target="_blank">The Puzzle of Transparency</a>”.)</p>
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