• Can we prove idealism is false?
    • If not, then we can't know for sure that there's an external world

Direct Realism

  • Direct perceptual access to mind-independent objects
    • E.g. tables, chairs, and physical/material objects
  • Objects exist independently of our perceiving them

Indirect Realism

  • Direct perceptual access to mind-dependent object
    • Sense data which stand between us and any physical/material objects
  • What we directly perceive vs what actually exists