The notoriously difficult challenge of drawing a clean line between legitimate science and its fraudulent imitators. Where does physics end and metaphysics begin? When does speculative biology become pseudobiology? The problem is that science and pseudoscience exist on a spectrum, with no single magic criterion—falsifiability, peer review, empirical method—that perfectly separates them in all cases. Astrology is easy to dismiss, but what about string theory, which makes no testable predictions? What about Freudian psychology, which is culturally influential but methodologically dubious? The Hard Problem is that demarcation is itself a scientific and philosophical puzzle with no universally accepted solution.
Hard Problem of Science-Pseudoscience Demarcation "I know homeopathy is pseudoscience—it's water with memory or whatever. But is economics a science? It makes predictions, but they're always wrong. Is psychology? It studies minds, but can't agree on basic methods. The Hard Problem of Demarcation is why your 'just use common sense' approach doesn't actually work."
by Dumu The Void February 23, 2026
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