In the 1600s, philosopher René Descartes  proposed a radical idea that continues to fascinate and challenge thinkers today: What if everything we perceive could be wrong? Descartes imagined a scenario in which a powerful deceiver could manipulate human perception, making the entire world appear real—even if it were not. While this thought experiment may sound extreme, it served a powerful philosophical purpose: it forced people to examine the foundation of certainty. Doubt as