4.1 Scepticism about the External World

Dive into the intriguing problem of knowledge and perception. Explore skepticism about the external world, distinguishing between vertical and horizontal doubt. Discover how Descartes confronted skepticism with his famous claim, 'I think therefore I am.' Uncover the intricacies of the Cartesian circle and how it challenges our understanding of certainty. This discussion promises to spark curiosity about what we can truly know!