In the philosophy of science, names like Popper and Kuhn are well-known. We occasionally hear of figures like Feyerabend and Lakatos as well, yet Norwood Russell Hanson is rarely mentioned. Kuhn was inspired by his philosophy, but actually I like the original better. Hanson was influenced by Wittgenstein’s later philosophy, particularly the idea that meaning and perception are shaped by our conceptual frameworks and language. From this, Hanson developed his notion of “theory-ladenness,” arguing that scientific observation is never purely objective but always influenced by prior knowledge and theoretical commitments. This view, foundational to Hanson’s work, highlights that in science, what we see depends on how we understand—a perspective that also influenced thinkers like Kuhn. Norwood Russell Hanson argued that observation in science is never purely objective; it’s always influenced by prior theories, beliefs, and expectations—a concept he called “theory-ladenness.” He believed that ...
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