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reconstruct the knowledge argument and distinguish a new-fact claim from ability and acquaintance replies
Paper packet. Every task here also exists on screen, where it is checked automatically; answers written on paper are not assessed by Nydus. When you are back at a device, enter your answers there.
You will reconstruct the knowledge argument and distinguish a new-fact claim from ability and acquaintance replies. Your answers reconstruct the supplied arguments; they do not report or score your own beliefs.
A fictional student reads all currently available books about color.
All available books can omit relevant physical information.
The student meets the complete-physical-knowledge condition on those premises.
Reading all those books supplies all physical knowledge relevant to the color experience.
Recall the difference between a claim and its reason, between truth and validity, and between a possibility and an actual observation. This lesson uses those distinctions to reconstruct competing explanations. Assessment concerns accurate reconstruction of the supplied positions, not agreement with a philosophical belief.
| Term | What it means |
|---|---|
| Physical information | Information about the world stated in the relevant physical description; the thought experiment stipulates complete possession of it. |
| Phenomenal knowledge | Knowledge concerning what an experience is like for its subject. |
| Ability reply | The proposal that first experience adds capacities such as recognition or imagination rather than a previously unknown nonphysical fact. |
| Acquaintance reply | The proposal that first experience provides a new direct way of knowing an experience or property. |
| Epistemic and ontological claims | Claims about knowledge and access differ from claims about what exists or what properties there are. |
The knowledge argument asks us to consider Mary, a scientist who has never experienced color but knows all the physical information about color vision. The setup is deliberately stronger than saying she has read every available textbook. It stipulates complete relevant physical knowledge so that a later gain in knowledge cannot simply be explained by a missing physical chapter.
When Mary first experiences a color, it seems plausible that she learns something about what that experience is like. The philosophical question is what kind of gain this is and what it implies. Does she learn a new fact beyond the physical facts? Does she gain a new ability, a new acquaintance, or a new way of understanding a fact she already knew? These alternatives must be distinguished before drawing a metaphysical conclusion.
The story is not an ordinary scientific prediction about an actual isolated researcher. Its idealized assumptions are part of the argument. A criticism can question whether complete physical knowledge without color experience is coherent, but that is different from merely observing that real people cannot read every textbook. Identify which assumption is being challenged and why it matters.
The lesson evaluates reconstruction, not a learner's report of their own sensory experiences. No particular sensory history is required to understand the conditional reasoning. You can work from the supplied stipulations, identify the proposed conclusion, and compare replies without treating one person's experience as a universal standard.
Another way: An argument with a disputed bridge
Read the supplied position as a route from premises to conclusion. Keep the critic's reply beside the premise it challenges. An objection can accept much of a case while disputing one bridge; a successful objection to one argument need not prove the opposite theory.
A common reconstruction says that Mary knows all physical facts before release, learns something on first seeing color, and therefore learns a fact not included among the physical facts. If there are facts beyond all the physical facts, the relevant completeness claim of physicalism is challenged. The controversial move is not just the observation that experience changes Mary; it is the classification of that change as knowledge of a previously unknown fact.
Write that bridge explicitly. 'Mary gains something' is weaker than 'Mary learns a new proposition about a nonphysical property'. Many changes are possible when somebody first encounters a phenomenon. They may become able to recognize it, recall it imaginatively, attend to it directly, or apply a familiar concept in a new way. Whether these gains are exhausted by abilities or involve new factual knowledge is the dispute.
The argument also needs the before-release completeness premise. If Mary lacked a relevant physical fact, learning that fact afterwards would not refute physicalism. A fair reconstruction therefore keeps the strong stipulation and does not quietly replace it with very extensive knowledge. An easy objection to a weaker story may fail to address the intended argument.
The conclusion's scope matters too. A successful knowledge argument would challenge an account claiming that all facts are physical in the relevant sense. It would not automatically establish a separate immortal substance, identify a particular mechanism of mental causation, or show that physical investigation is useless. Those are additional claims requiring additional arguments. State what the argument would establish if its contested premises and bridge were accepted.
The ability reply interprets Mary's gain primarily as knowing how rather than learning an additional nonphysical fact. She may become able to recognize a color experience when it occurs, remember it in a distinctive way, or imagine it. Before release she could describe the physical process completely without possessing these first-person capacities.
To evaluate the reply, separate the claim that abilities are gained from the claim that only abilities are gained. A defender of the knowledge argument can agree that Mary acquires recognition skills while insisting that she also learns what the experience is like in a factive sense. The ability reply needs to account for the apparent knowledge gain, not merely list some abilities that accompany it.
Conversely, the phrase learns something does not by itself settle the issue against the reply. Ordinary language uses learn for skills as well as propositions: someone can learn to balance or identify a sound. An argument cannot win just by choosing a verb whose everyday use is broad. Specify the content Mary allegedly comes to know and explain why an ability account does or does not capture it.
A useful case contrasts two questions after release. Can Mary reliably sort a sample by experience? Does Mary now know a proposition that was absent from her complete physical knowledge? The first concerns a capacity demonstrated in performance. The second concerns the content and kind of knowledge. The questions may be connected, but an answer to the first is not automatically an answer to the second. A fair assessment keeps both sides' claims at the proper level.
An acquaintance reply emphasizes direct experiential access. Mary may come into a new relation with a property she previously knew through physical description. The gain would be real without automatically requiring an additional nonphysical property. This proposal differs from saying nothing changes: Mary's way of knowing changes substantially.
Another family of replies uses the distinction between one fact and different concepts or modes of presentation. A person can know a fact under one description without recognizing it under another. On this approach, first experience can supply a phenomenal concept or first-person grasp of a physical fact already known under a different description. The metaphysical conclusion does not follow merely from the novelty of access.
These replies face a challenge of their own. They must explain why the new acquaintance or concept captures the distinctive phenomenal aspect rather than simply renaming the gap. A defender of the knowledge argument can ask what Mary now understands and whether the supposed same-fact account accounts for its content. The disagreement is not resolved by repeating either new way or new fact as a slogan.
In a supplied comparison, identify each reply's target. The ability reply challenges a classification of the gain as new propositional knowledge. A same-fact, new-concept reply can accept a kind of new knowledge while denying that its object is a new nonphysical fact. An acquaintance account highlights a new direct relation. These positions can overlap, but their central explanations should not be merged into one vague claim that Mary already knew everything.
The central methodological issue is whether a limit on knowing or imagining establishes a limit on what physical facts determine. Epistemic claims concern knowledge, justification or access. Ontological claims concern what exists and what properties the world contains. A transition between them can be argued for, but it is not automatic.
Consider an ordinary identity discovered through investigation. Someone might know an object under one name while failing to recognize it under another. Their incomplete recognition would not make the object numerically two. This analogy illustrates a possible gap between ways of knowing and kinds of thing. It does not by itself refute the knowledge argument, because a defender may insist that Mary's phenomenal gain has a different structure.
The right comparison therefore identifies the proposed similarity and the point at which it may fail. Does Mary's new experience simply provide another representation of an already known property, or disclose something the physical description could not contain? Each answer needs an account of the experience's content. An analogy can clarify the available options without settling the contested premise.
Write the argument as a chain with a labeled bridge rather than as two isolated slogans. Complete physical knowledge is the starting stipulation. A later epistemic gain is the proposed observation. The bridge identifies that gain as knowledge of a further fact. The metaphysical conclusion follows only with that classification. A critic who targets the bridge can grant much of the setup, and a defender who explains the bridge advances the discussion more than one who simply repeats that seeing is different from reading.
An idealization is useful when it isolates a question, but its assumptions must remain visible. Mary's complete physical knowledge is not established by a real examination score. Her lack of color experience is not a claim about every actual person with a particular sensory history. The argument is a conditional exploration of the relationship between description and experience.
Do not weaken the case without announcing it. Replacing complete knowledge with ordinary expertise changes the argument. Adding a previously unknown physical observation after release gives an obvious physicalist explanation for learning, but it avoids the original stipulation rather than answering it. On the other hand, a principled argument that the stipulation is incoherent addresses the thought experiment directly.
A balanced conclusion can therefore name a conditional result and a remaining dispute: if Mary's gain is genuinely new factual knowledge and her earlier knowledge included all physical facts, the physicalist completeness claim is challenged; replies dispute the classification of the gain or the coherence and force of the setup. This is a substantive philosophical assessment even when it leaves the final verdict open.
In the activities, produce the premise, bridge and reply target using the supplied case. Grading concerns whether those roles are represented accurately. It does not award points for declaring physicalism true or false, and it does not treat confidence or personal conviction as evidence that one side's bridge has been established.
A fictional music course gives a learner a complete stipulated physical description of a particular timbre before the learner hears it. After hearing it, the learner can recognize that timbre in a new recording. A tutor says this proves the learner discovered a nonphysical fact. Another tutor says the learner gained nothing at all. Both descriptions need more careful analysis.
The recognition performance is a genuine change in ability. It supports the limited claim that first hearing enabled the learner to identify the timbre through experience. It does not by itself decide whether that change also includes knowledge of a new fact, acquaintance with a previously described property, or a new concept for an already known fact. Those are the philosophical alternatives being compared.
If the first tutor invokes the knowledge argument, the complete-physical-information stipulation must remain explicit. An ordinary music handout is not complete physical knowledge, so an actual classroom comparison would not automatically reproduce Mary's idealized case. The example here is deliberately fictional and stipulates the relevant completeness for discussion.
A responsible lesson asks the learner to reconstruct two interpretations of the change and identify what would need to be defended for each. It can separately assess recognition as a practical skill. It should not score a metaphysical commitment as though it were a listening test. This distinction preserves the educational value of first-person learning while keeping the conclusion no broader than the argument offered for it.
A genuine gain after experience may be described as an ability, acquaintance, a new concept, or new factual knowledge. The knowledge argument requires a defended classification of that gain; merely repeating that something was learned does not settle the dispute.
Locate the result being argued for.
Under those premises, her newly learned fact was not among the physical facts she already knew.
This is the proposed conclusion. Its conditional wording preserves any assumptions the argument has not independently established.
Record the starting claim offered in support.
Mary is stipulated to know all physical facts before her first color experience.
This premise supplies the case or observation that the proposed bridge will use; it is not yet the whole conclusion.
Make the linking premise explicit.
On first seeing color, Mary learns a genuinely new fact rather than only acquiring an ability.
This is the proposed inferential connection. Assessing it requires the philosophical distinction named in its own wording.
Reconstruct the offered support before assessing the reply.
Statements 3 and 2 support statement 1.
The connection being proposed is: On first seeing color, Mary learns a genuinely new fact rather than only acquiring an ability. Mapping it makes the argument reviewable without declaring that premise true.
Locate the objection's immediate target.
The gain may be an ability rather than knowledge of a new fact. Target: statement 2.
The challenged commitment is: On first seeing color, Mary learns a genuinely new fact rather than only acquiring an ability. The reply should be evaluated at that point rather than treated as a personal criticism.
Locate the result being argued for.
The proposed refutation needs the ability-to-fact bridge.
This is the proposed conclusion. Its conditional wording preserves any assumptions the argument has not independently established.
Record the starting claim offered in support.
After first hearing a stipulated timbre, a learner can recognize it experientially.
This premise supplies the case or observation that the proposed bridge will use; it is not yet the whole conclusion.
Make the linking premise explicit.
If every new ability entails a new nonphysical fact, this ability refutes physicalism.
This is the proposed inferential connection. Assessing it requires the philosophical distinction named in its own wording.
Reconstruct the offered support before assessing the reply.
Statements 2 and 4 support statement 3.
The connection being proposed is: If every new ability entails a new nonphysical fact, this ability refutes physicalism. Mapping it makes the argument reviewable without declaring that premise true.
Locate the objection's immediate target.
Learning how to recognize something need not add a nonphysical proposition. Target: statement 4.
The challenged commitment is: If every new ability entails a new nonphysical fact, this ability refutes physicalism. The reply should be evaluated at that point rather than treated as a personal criticism.
Locate the result being argued for.
The acquaintance gain refutes physicalism only under that extra premise.
This is the proposed conclusion. Its conditional wording preserves any assumptions the argument has not independently established.
Record the starting claim offered in support.
A subject acquires direct acquaintance with a previously physically described experience.
This premise supplies the case or observation that the proposed bridge will use; it is not yet the whole conclusion.
Make the linking premise explicit.
If a new mode of access necessarily has a new nonphysical object, acquaintance refutes physicalism.
This is the proposed inferential connection. Assessing it requires the philosophical distinction named in its own wording.
Reconstruct the offered support before assessing the reply.
Statements 1 and 2 support statement 3.
The connection being proposed is: If a new mode of access necessarily has a new nonphysical object, acquaintance refutes physicalism. Mapping it makes the argument reviewable without declaring that premise true.
Locate the objection's immediate target.
One property may be known through different relations or concepts. Target: statement 2.
The challenged commitment is: If a new mode of access necessarily has a new nonphysical object, acquaintance refutes physicalism. The reply should be evaluated at that point rather than treated as a personal criticism.
State what the objection can leave in place.
A subject acquires direct acquaintance with a previously physically described experience.
The critic may grant this other premise while disputing the targeted one. Rejecting one bridge does not automatically reject every observation or prove the opposite metaphysical theory.
Reconstruct the offered support before assessing the reply.
Statements 1 and 2 support statement 3.
The connection being proposed is: If a new mode of access necessarily has a new nonphysical object, acquaintance refutes physicalism. Mapping it makes the argument reviewable without declaring that premise true.
Locate the objection's immediate target.
One property may be known through different relations or concepts. Target: statement 2.
The challenged commitment is: If a new mode of access necessarily has a new nonphysical object, acquaintance refutes physicalism. The reply should be evaluated at that point rather than treated as a personal criticism.
State what the objection can leave in place.
Read the supplied argument and its critic. Mark only the two premises of the offered argument and choose its conclusion. The objection is important for evaluation, but it is not a premise of the original argument.
Underline the premises and circle the conclusion in the passage above.
The following is a supplied argument and objection, not a set of agreed philosophical facts. (1) A fictional student reads all currently available books about color. (2) All available books can omit relevant physical information. (3) The student meets the complete-physical-knowledge condition on those premises. (4) Reading all those books supplies all physical knowledge relevant to the color experience. Reconstruct it: enter both premise sentence numbers in ascending order, the conclusion number, and the premise number directly targeted by the objection. Evaluate the supplied reply's target, not your personal agreement with the view.
Find the offered starting point and bridge.
Premises: p, q.
List their printed sentence numbers in ascending order, keeping the objection separate from the offered support.
Find the result the argument asks its reader to accept.
Conclusion: c.
The conclusion is supported by the two offered premises, rather than offered as a reason for either of them.
Match the objection to its immediate target.
Target: t.
Ask which premise the reply disputes; disagreement with the overall result does not identify that premise by itself.
Complete the argument-role table using these fixed symbols: P = premise, C = conclusion, O = objection. Enter only P, C or O for each supplied statement. These symbols record its job, not whether it is true.
| Argument role | |
|---|---|
| If a new concept always refers to a new nonphysical property, the gain establishes such a property. | |
| Conceptual novelty need not imply a new property rather than a new presentation. | |
| Mary is stipulated to gain a new phenomenal concept on release. | |
| The metaphysical conclusion depends on the concept-to-property rule. |
(1) The reply blocks the argument's new-fact step if its exhaustion claim succeeds. (2) If those abilities exhaust the alleged gain, no additional factual gain has been established. (3) The defender maintains that factual knowledge accompanies the abilities. (4) An ability reply grants that first experience enables recognition and imagination. Construct the supplied reasoning. Draw supports from each premise to the conclusion, and challenges from the objection to its immediate target premise. This map records the proposed reasoning without asserting that its premises are settled.
This task has no paper form; do it on a device.
The following is a supplied argument and objection, not a set of agreed philosophical facts. (1) The defender argues that the new acquaintance still discloses an additional fact. (2) If that change need not add a nonphysical fact, real learning alone does not refute physicalism. (3) An acquaintance reply accepts a real change in how Mary knows the experience. (4) The learning observation is compatible with the reply's interpretation. Reconstruct it: enter both premise sentence numbers in ascending order, the conclusion number, and the premise number directly targeted by the objection. Evaluate the supplied reply's target, not your personal agreement with the view.
Analysis of mary and the knowledge argument: first premise p; second premise q; conclusion c; objection target t.
The following is a supplied argument and objection, not a set of agreed philosophical facts. (1) A museum's fictional sound exhibit gives complete stipulated physical information before first listening. (2) If first listening adds only recognition ability, the gain does not establish the knowledge argument's further fact. (3) The curator argues that the listener also learns what the timbre is like propositionally. (4) The exhibit's performance result alone leaves the new-fact premise unsettled. Reconstruct it: enter both premise sentence numbers in ascending order, the conclusion number, and the premise number directly targeted by the objection. Evaluate the supplied reply's target, not your personal agreement with the view.
Analysis of mary and the knowledge argument: first premise p; second premise q; conclusion c; objection target t.
Lesson test: one question per skill, one attempt each, no hints. Your answers are checked when you submit.
The following is a supplied argument and objection, not a set of agreed philosophical facts. (1) A fact absent from complete physical knowledge is not among the physical facts in that setup. (2) The setup grants complete prior physical knowledge and a later genuinely new factual gain. (3) Under both stipulations, physical facts do not exhaust all facts learned. (4) The critic grants a gain but disputes its classification as a genuinely new fact. Reconstruct it: enter both premise sentence numbers in ascending order, the conclusion number, and the premise number directly targeted by the objection. Evaluate the supplied reply's target, not your personal agreement with the view.
Analysis of mary and the knowledge argument: first premise p; second premise q; conclusion c; objection target t.
Without rereading, reconstruct the knowledge argument and distinguish a new-fact claim from ability and acquaintance replies. State a premise the objection can accept and the different premise it directly challenges.
16. Complete the objection analysis, step 3
A subject acquires direct acquaintance with a previously physically described experience.
The critic may grant this other premise while disputing the targeted one. Rejecting one bridge does not automatically reject every observation or prove the opposite metaphysical theory.