{"id":43006,"date":"2026-05-15T20:03:19","date_gmt":"2026-05-15T20:03:19","guid":{"rendered":"https:\/\/drdavidcring.net\/descartes-ideas\/?p=43006"},"modified":"2026-06-17T15:30:14","modified_gmt":"2026-06-17T15:30:14","slug":"condensation-why-objective-reality-cannot-be-descartess-theory-of-thought-burman-common-notions-and-the-failure-of-the-strict-idea-model","status":"publish","type":"post","link":"https:\/\/drdavidcring.net\/descartes-ideas\/orientation\/condensation-why-objective-reality-cannot-be-descartess-theory-of-thought-burman-common-notions-and-the-failure-of-the-strict-idea-model\/","title":{"rendered":"Condensation: Why Objective Reality Cannot Be Descartes\u2019s Theory of Thought: Burman, Common Notions, and the Failure of the Strict Idea Model"},"content":{"rendered":"\n
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[NOTE:<\/span><\/strong> Words below in magenta<\/a> or blue underlined<\/u><\/span><\/a> are clickable hyperlinks. For many of the hyperlinked glossary items you may need to scroll down to see that entry after clicking on it. Hit the back button \"An in your browser afterwards to return to this post.<\/p>\n\n\n\n

See the complete uncondensed version \u201cWhy Objective Reality Cannot Be Descartes\u2019s Universal Theory Of Thought: Burman, Common Notions, And The Failure Of The Strict-Idea Model<\/a>\u201d and its companion piece \u201cWhy Objective Reality Cannot Be Universal In Descartes\u2019s Theory Of Ideas: Nothing, Eternal Truths, Sensations, And Fear With Claude Opus 4.6<\/a>.\u201d]<\/p>\n\n\n\n

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Introduction by ChatGPT 5.5 Thinking<\/mark><\/h3>\n\n\n\n
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This post defends a restricted thesis about Descartes\u2019s doctrine of objective reality<\/a>. It does not<\/strong> claim that objective reality<\/a> is empty, useless, or absent wherever thought is meaningful. It claims, more narrowly, that objective reality<\/a> cannot function as Descartes\u2019s universal theory of thought-content, intelligibility, or aboutness<\/a>. Objective reality<\/a> belongs most securely to strict ideas<\/a> in which something is internally represented as objectively contained in the idea and can be measured by the relevant ontological rank of what is represented.<\/p>\n\n\n\n

The argument therefore distinguishes objective reality<\/a><\/strong> from objective being<\/a><\/strong>, distinguishes strict ideas<\/a> of things<\/strong> from broad-sense ideas<\/a> or thoughts<\/strong>, and, most importantly, distinguishes propositional or truth-content<\/strong> from the constituent ideas<\/strong> that may be used in thinking a proposition. Once these distinctions are in place, Conversation with Burman<\/em><\/a>, Principles of Philosophy<\/em> I.48\u201349<\/a>, common notions<\/a>, the idea of nothing<\/a>, and, on my reading, secondary-quality sensations<\/a>, all exert pressure against universalizing readings of objective reality<\/a>.<\/p>\n\n\n\n

The central conclusion is not that every disputed item demonstrably lacks objective reality<\/a>. That would be too strong. The central conclusion is that Descartes\u2019s own texts block the easy inference from thinkability<\/strong> to objective reality<\/a><\/strong>. The defender of universal objective reality<\/a> must therefore identify, case by case, the specific representatum<\/a><\/em> allegedly contained objectively in the thought. In some cases\u2014especially common notions<\/a> such as ex nihilo, nihil fit<\/em> (\u201cFrom nothing, nothing comes\u201d)\u2014that specification is difficult to make stable.<\/p>\n\n\n\n

Objective reality<\/a> remains a powerful Cartesian doctrine, but it is not Descartes\u2019s universal account of every form of thinkable content.<\/strong><\/mark><\/p>\n\n\n\n

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Governing Thesis in One Sentence<\/mark><\/h3>\n\n\n\n
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\"An “Descartes’s doctrine of objective reality<\/a> is not a universal theory of thought-content, but a restricted ontological measure: it applies where an idea internally represents something as objectively contained in it. Common notions, the idea of nothing, some intelligible-but-false judgments described below, and secondary-quality sensations together reveal a broader field of thinkable content that the objective reality<\/a> apparatus does not, by itself, explain.”<\/strong><\/p>\n\n\n\n

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The Post\u2019s Dialectical Target<\/mark><\/h3>\n\n\n\n
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This post is directed at interpretations that universalize either of two theses:<\/p>\n\n\n\n

    The strong universal thesis<\/mark><\/strong> says that all Cartesian ideas contain objective reality<\/a>.<\/p>\n\n\n\n

    The weaker universal thesis<\/mark><\/strong> says that every Cartesian idea is internally representational in the strict sense.<\/p>\n\n\n\n

These theses are not identical. A commentator may deny universal objective reality<\/a> while still holding that all ideas are representational. The post keeps these targets apart.<\/p>\n\n\n\n

The central objection<\/strong> is that both theses risk flattening Descartes\u2019s own taxonomy. Descartes recognizes strict ideas tanquam rerum imagines<\/em> (\u201cas if an image of a thing\u201d), but he also recognizes broad sense ideas<\/a> that include common notions<\/a>, eternal truths<\/a>, the idea of nothing<\/a>, passions of the soul<\/a>, secondary-quality sensations<\/a>, acts of affirmation<\/a> and denial<\/a>, and other modes of thought. A theory that treats all of these as strict internally object-containing ideas with objective reality<\/a> has to explain how<\/em><\/strong> that uniform model fits Descartes\u2019s actual classifications.<\/p>\n\n\n\n

The Table of Cartesian Commentators<\/a> below therefore functions as part of the argument rather than as a decorative appendix. It displays how frequently commentators either identify ideahood with objective reality<\/a> or at least identify ideahood with internal representation. The later sections then test these assumptions against Descartes\u2019s own distinctions.<\/p>\n\n\n\n

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Objective Reality and Objective Being: The Distinction Needed at the Start<\/mark><\/h3>\n\n\n\n
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The argument requires a sharper distinction between objective being<\/strong><\/a> and objective reality<\/a><\/strong> than Descartes’s own vocabulary always supplies. Descartes uses esse objectivum<\/em> and realitas objectiva<\/em> in close proximity in the Third Meditation and the First Replies, and he does not consistently mark a terminological cleavage between them (cf. AT VII 41\u201342<\/a>; AT VII 102\u2013103<\/a>). The distinction defended here is therefore reconstructive: it is anchored in what Descartes’s arguments require, not in two rigorously separated technical terms. Even where his vocabulary blurs, his argumentative practice insists on the difference.<\/p>\n\n\n\n

Objective being<\/strong><\/a> concerns the way represented content exists in the intellect<\/em>: not formally, as the sun exists outside the mind, but objectively, as the sun exists in the idea of the sun. It marks the special intentional mode of being possessed by what is contained in an idea as represented. Objective reality<\/strong><\/a>, by contrast, concerns the determinate represented content of the idea<\/em> together with its ontological rank as represented<\/em>. Thus an idea of a mode, an idea of a finite substance, and an idea of an infinite substance differ in objective reality because what is represented in each case differs both in content and in represented ontological status.
Put differently: objective being<\/a> answers the question how the represented item exists in the intellect; objective reality<\/a> answers the question what is represented and with what representational rank it is contained in the idea. The two notions are inseparable in standard cases of strict Cartesian representation, but they are not identical. Objective being<\/a> names the way<\/strong><\/em> the representatum<\/em> exists in the intellect; objective reality<\/a> measures the determinate representational content<\/strong><\/em> of that representatum<\/em>, including whether it is represented as a mode, a finite substance, or an infinite substance.<\/p>\n\n\n\n

This distinction matters because a thought may be meaningful, thinkable, or present to consciousness without thereby containing a determinately rankable representatum<\/em> in the strict objective-reality sense. A sensation, a passion, an awareness of nothing, or a common notion may be before the mind without functioning as a a strict idea<\/a> that internally represents a thing or mode with objective reality. To treat every item before the mind as objective-reality-bearing would collapse Descartes’s distinction between broad-sense idea<\/a> and a strict representational idea<\/a>.<\/p>\n\n\n\n

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Why the Distinction Is Not Eliminative of Ontological Kind<\/mark><\/h3>\n\n\n\n

The point is not that objective reality<\/a> excludes ontological kind. On the contrary, when an idea internally represents a mode, a finite substance, or an infinite substance, that represented ontological kind belongs to the idea’s objective reality<\/a>. The point is rather that objective reality<\/a> is not identical with mere thinkability, mere mental presence, or mere objective being<\/a> taken in abstraction. Objective reality<\/a> measures already determinate represented content. It does not automatically attach to every mode of thought simply because that mode is present to consciousness.<\/p>\n\n\n\n

This also explains why objective reality<\/a> is indispensable to Descartes without being universal in scope. The doctrine does its decisive philosophical work in the causal-adequacy reasoning of the Third Meditation, where the rank of a represented content (mode, finite substance, infinite substance) constrains what could count as an adequate cause of the idea. That ranking apparatus is designed for ideas that enter the causal proof; mental episodes that do not enter that proof\u2014sensations, negations, axioms, common notions\u2014need not be assigned a rank at all.<\/p>\n\n\n\n

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The Proposition \/ Constituent Distinction<\/mark><\/h3>\n\n\n\n
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This distinction should be made early because it prevents much of the confusion surrounding eternal truths and common notions. A proposition can be thinkable, meaningful, and even clearly and distinctly perceived without itself being one unified objective reality<\/a>-bearing representatum<\/em>. At the same time, some of the constituent ideas used in thinking that proposition may themselves have objective reality<\/a>.<\/p>\n\n\n\n

For example, the thought figure is the limit of extension<\/em> may involve constituents such as figure and extension. Extension is a strong candidate for objective reality<\/a> because it is the principal attribute of body. But the proposition figure is the limit of extension<\/em>, considered as a proposition, need not thereby be a further OR<\/a>-bearing object over and above its constituents. It may instead be an eternal truth or intellectual proposition grasped by the mind.<\/p>\n\n\n\n

The same point applies even more forcefully to ex nihilo, nihil fit<\/em>. The proposition is intelligible and truth-bearing, but its explicit constituents\u2014especially \u201cnothing\u201d\u2014do not supply obvious candidates for positive objectively real contents. If the defender of objective reality<\/a> for common notions wishes to treat the proposition itself as objectively contained, the defender must explain what the contained representatum<\/em> is: nothingness, impossibility, causal dependence, being as such, or the truth-proposition itself. None of these candidates is cost-free.<\/p>\n\n\n\n

This proposition\/constituent distinction is crucial. It permits a restricted pro-OR<\/a> claim for some constituent ideas while blocking an automatic pro-OR<\/a> inference for the whole proposition as such.<\/p>\n\n\n\n

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Two Different Pressures Against Universalism<\/mark><\/h3>\n\n\n\n
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Two distinct pressures undermine universal objective reality<\/a> readings.<\/p>\n\n\n\n

First<\/mark><\/strong>, secondary-quality sensations undermine the inference from broad-sense ideahood<\/a> to objective reality<\/a> (on the anti-OR<\/a> reading defended throughout the DTOI website<\/a>). A cold sensation can be a genuine Cartesian idea in the broad sense<\/a> because it is immediately present to the mind as a mode of thought, while still lacking internally object-fixing objective reality<\/a>. Such a sensation may externally represent as a lawfully connected sign of a bodily configuration, but it does not internally represent a positive quality of coldness as objectively contained in the idea.<\/p>\n\n\n\n

Second<\/mark><\/strong>, common notions<\/a> pressure a different inference: the move from thinkability or clear intelligibility to strict idea-of-a-thing status. Descartes treats common notions<\/a> as clearly and distinctly perceivable and indispensable to reasoning, yet Principles of Philosophy<\/em> I.48\u201349<\/a> classifies them under eternal truths, and elsewhere, Conversation with Burman<\/em><\/a> says that ideas of common notions<\/a> are not strictly ideas of real things.<\/p>\n\n\n\n

The argument is strongest when these two pressures are kept distinct. The sensory case challenges the universal move from idea<\/strong> to objective reality<\/a><\/strong>. The common-notion<\/a> case challenges the universal move from thinkability<\/strong> to strict idea<\/a> of a thing<\/strong>.<\/p>\n\n\n\n

For extensive defense of the claim that secondary-quality sensations lack objective reality<\/a>, see the following DTOI posts:<\/p>\n\n\n\n