Evil daemon

Evil daemon

The evil d [a] emon, sometimes referred to as the evil genius, is a concept in Cartesian philosophy. In his "Meditations on First Philosophy", René Descartes hypothesises the existence of an evil demon, a personification who is "as clever and deceitful as he is powerful, who has directed his entire effort to misleading me." The evil demon presents a complete illusion of an external world, including other people, to Descartes' senses, where in fact there is no such external world in existence. The evil genius also presents to Descartes' senses a complete illusion of his own body, including all bodily sensations, where in fact Descartes has no body. Most Cartesian scholars opine that the evil demon is also omnipotent, and thus capable of altering mathematics and the fundamentals of logic.cite book|title=Common Sense, Science and Scepticism: A Historical Introduction to the Theory of Knowledge|author=Alan E. Musgrave|pages=202|date=1993|publisher=Cambridge University Press|id=ISBN 0521436257] cite book|title=Cartesian Theodicy: Descartes' quest for certitude|author=Zbigniew Janowski|pages=62–68|date=2000|publisher=Springer|id=ISBN 079236127X]

General discussion

The evil demon has a parallel with Bishop Berkeley's concept of a consensus reality supported by God. It is one of several methods of systematic doubt that Descartes employs in the "Meditations."

Another such method of systematic doubt is the deus deceptor (French "dieu trompeur"), the deceptive God. Cartesian scholars differ in their opinions as to whether the deus deceptor and the evil demon are one and the same. Among the accusations of blasphemy made against Descartes by Protestants was that he was positing an omnipotent God of malevolent intent.

Kennington [cite book|title=Rene Descartes: Critical Assessments|editor=Georges Joseph Daniel Moyal|pages=139|date=1991|publisher=Routledge|id=ISBN 0415023580|author=Richard Kennington|chapter=The 'Teaching of Nature' in Descartes' Soul Doctrine] [cite book|pages=146|title=On Modern Origins: Essays in Early Modern Philosophy|author=Richard M. Kennington|chapter=The Finitude of Descartes' Evil Genius|date=2004|publisher=Lexington Books|id=ISBN 0739108158] states that the evil demon is never declared by Descartes to be omnipotent, merely to be not less powerful than he is necessarily deceitful, and thus not explicitly an equivalent to an omnipotent God. The evil demon is capable of simulating an external world and bodily sensations, but incapable of rendering dubious things that are independent of trust in the senses, such as pure mathematics, eternal truths, and the principle of contradiction.

However, this was not the view of Descartes' contemporaries. Voetius accused Descartes of blasphemy in 1643. Jacques Triglandius and Jacobus Revius, theologians at Leiden University, made similar accusations in 1647, accusing Descartes of "hold [ing] God to be a deceiver", a position that they stated to be "contrary to the glory of God". Descartes was threatened with having his views condemned by a synod, but this was prevented by the intercession of the Prince of Orange (at the request of the French Ambassador Servien).

The accusations referenced a passage in the "First Meditation" where Descartes stated that he supposed not an optimal God but rather an evil demon " & " (translated as "most highly powerful and cunning"). The accusers identified Descartes' concept of a deus deceptor with his concept of an evil demon, stating that only an omnipotent God is "summe potens" and that describing the evil demon as such thus demonstrated the identity. Descartes' response to the accusations was that in that passage he had been expressly distinguishing between "the supremely good God, the source of truth, on the one hand, and the malicious demon on the other". He did not directly rebut the charge of implying that the evil demon was omnipotent, but asserted that simply describing something with "some attribute that in reality belongs only to God" does not mean that that something is being held to actually "be" a supreme God.

That the evil demon is omnipotent, Christian doctrine notwithstanding, is seen as a key requirement for Descartes' argument by Cartesian scholars such as Alguié, Beck, Émile Bréhier, Chevalier, Frankfurt, Étienne Gilson, Anthony Kenny, Laporte, Kemp-Smith, and Wilson. The progression through the "First Meditation", leading to the introduction of the concept of the evil genius at the end, is to introduce various categories into the set of dubitables, such as mathematics (i.e. Descartes' addition of 2 and 3 and counting the sides of a square). Although the hypothetical evil genius is never stated to be one and the same as the hypothetical deus deceptor, the inference by the reader that they are is a natural one, and the requirement that the deceiver is capable of introducing deception even into mathematics is seen by commentators as a necessary part of Descartes' argument. Kenney exemplifies Cartesian scholarship on this point, stating that the reason that Descartes introduces a second hypothetical, beyond the original hypothetical of the deus deceptor, is that it is simply "less offensive. The content of the two hypotheses is the same, namely that an omnipotent deceiver is trying to deceive." Scholars contend that in fact Descartes was not introducing a new hypothetical, merely couching the idea of a deceptive God in terms that would not be offensive.

Janowski points out one reason for not accepting this interpretation, the same as given by Kennington, namely that the set of things that the evil demon is stated as rendering dubious ("the heavens, the air, the earth, colours, figures, sounds, and all external things") is only a subset of the things that the deus deceptor is stated as rendering dubious (earth, heavens, extended things, figure, magnitude, place, and mathematics). The omission of mathematics implies either that the evil demon is not omnipotent or that Descartes retracted Universal Doubt. Janowski notes that in "The Principles of Philosophy" (I, 15) Descartes states that Universal Doubt applies even to "the demonstration of mathematics", and so concludes that either Descartes' "Meditation" is flawed, lacking a reason for doubting mathematics, or that the charges of blasphemy were well placed, and Descartes "was" supposing an omnipotent evil demon.

W. Teed Rockwell, claiming to be a Deweyan pragmatist, argues that instead of being dualists or Cartesians, "philosophers should realize that the human conscious self is not reducible to the brain, nor to the nervous system, nor even to the human body. The thinking, conscious self is a nexus--or a "behavioral field"--of the brain, the nervous system, the body, and the world."cite journal |title=Rockwell, W. Teed. Neither Brain Nor Ghost: A Nondualist Alternative to the Mind-Brain Identity Theory; Book review |last=Baldner |first=Steven |journal=The Review of Metaphysics |volume=60 |issue=2 |issn=0034-6632 |date=2006-12-01 |pages=419(3)] Rockwell contends that his position "can allow for solutions to certain philosophical problems such as the 'brain in the vat,' . . . a contemporary, materialist version of the problem introduced by Descartes's 'Evil Genius'". "Both thought experiments are supposed to show us that human consciousness is plausible even though there might be no world in which consciousness exists," but Rockwell argues "that even in a vat the brain would have to be stimulated by some world, if only a world of electronic gizmos, and that such a world would have to produce a continuous experience. The brain, hence, would have to be embodied in some way."

ee also

*Brain in a vat
*Dream argument
*Internalism and externalism
*Neurally controlled animat
*Simulated reality
*Skeptical hypothesis
*Solipsism
*Satan

References

Further reading

* — originally published as:
** cite journal|title=Descartes' Evil Genius|author=O. K. Bouwsma|journal=The Philosophical Review|volume=58|issue=2|date=March 1949|pages=141–151|doi=10.2307/2181388
*
*cite book|title=Neither Brain Nor Ghost: A Nondualist Alternative to the Mind-Brain Identity Theory|author=Rockwell, W. Teed|chapter=5|date=2007|publisher=MIT Press|id=ISBN 0262681676


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