<prompt> Descartes, Discourse on Method Meditations, Essay on the Method of Skepticism, Essay on the Method of Skepticism, Essay on the Method of Skepticism, Essay on the Method of Skepticism, Essay on the Method of Skepticism, Essay on the Method of Skepticism, Essay on the Method of Skepticism, Essay on the Method of Skepticism, Essay on the Method of Skepticism, Essay on the Method of Skepticism, Essay on the Method of Skepticism, Essay on the Method of Skepticism, Essay on the Method of Skepticism, Essay on the Method of Skepticism, Essay on the Method of Skepticism, Essay on the Method of Skepticism.  <response>: Descartes aliandika katika kitabu chake cha Meditations on the First Philosophy, kwamba kila kitu kinachodhaniwa kuwa kweli kinaweza kutupotosha kwa njia mbalimbali, kwa mfano, yeye anasema kwamba ndoto zinaweza kutokeza mambo yaliyo wazi na yenye kufanana na maisha ambayo hayawezi kutofautishwa na hali halisi ya kuamka, na hii inazusha swali la jinsi tunavyoweza kuwa na uhakika kwamba uzoefu wetu wa kuamka si udanganyifu pia.Kama vile vile, yeye anasema kwamba udanganyifu unaweza kudanganywa na udanganyifu, kama vile udanganyifu wa akili unaofanana na udanganyifu wa akili.Kwa hivyo, Descartes anadai kwamba udanganyifu wa akili ni udanganyifu na kwamba udanganyifu wa akili ni udanganyifu wa akili, na kwamba udanganyifu wa akili ni udanganyifu wa akili. 