What is one claim made by Descartes regarding human perception?

Descartes is known for his method of skepticism, where he questioned the reliability of sensory perception. He argued that our senses can sometimes lead us to incorrect conclusions about the world, indicating that perception can indeed be deceived by external factors. This perspective contributes to his broader philosophical debates about doubt and the nature of reality, wherein he seeks to establish a firm foundation for knowledge that acknowledges the potential for misperceptions caused by illusions or mistakes of the senses. Thus, the acknowledgment that perception can be unreliable aligns well with Descartes' emphasis on the need for critical thinking and the potential for external factors to influence how we perceive reality, making this claim consistent with his philosophical views.