What if the limits of human knowledge aren't out there in the universe—but built into your own mind? In this episode, we dive into Critique of Pure Reason, Immanuel Kant's notoriously difficult, endlessly influential attempt to answer a deceptively simple question: what can we actually know, and how is knowledge even possible? We'll strip away the impenetrable language and get to the core ideas—space and time as mental frameworks, the difference between appearances and reality, and why reason keeps running into contradictions when it tries to go too far. If you've ever wondered why metaphysics keeps collapsing, why science works at all, or why Kant is both hated and revered, this episode will finally make sense of the book people love to cite and fear to read.