Radical doubt

Radical doubt is a philosophical technique introduced by René Descartes, which involves questioning everything we believe to be true to identify what can be known with certainty. By doubting all perceptions, memories, and sensory experiences, the goal is to find an indubitable foundation for knowledge. This method helps distinguish between beliefs that are uncertain and those that are absolutely certain, ultimately leading to the famous conclusion "I think, therefore I am." Radical doubt is a tool for rigorous self-examination, encouraging critical thinking about the basis of our beliefs and perceptions.