The Three Kinds of Knowledge

Spinoza identifies three kinds of knowledge corresponding to three degrees of cognitive adequacy. The first, imaginatio, is knowledge through signs, images, and hearsay — passive reception of symbols without comprehension of their causes. The second, ratio, is knowledge through common notions — the intellect's grasp of structural regularities that hold universally. The third, scientia intuitiva, is intuitive knowledge — the direct perception of particular things in their necessary connection to the infinite substance, requiring biographical depth, embodiment, and mortality. The framework maps onto AI with unsettling exactness: large language models operate primarily through the first kind (pattern reproduction without causal grasp), exhibit significant capability in the second (identifying structural regularities across domains), and possess no demonstrated capability in the third. The implications are practical and immediate for education, work, and the specific forms of cognition that remain the human being's alone.