Demarcation Guillotine

A sharp separation between “science” and “non‑science,” used to dismiss entire fields or practices as illegitimate. It draws a clean line based on a single criterion (e.g., falsifiability, empiricism, peer review) and then uses that line to exclude anything that doesn’t fit. The Demarcation Guillotine ignores the messy, contested history of demarcation and the fact that many legitimate disciplines (history, mathematics, design) don’t meet strict criteria. It is a favourite tool of scientistic debaters who want to purge “pseudoscience” without engaging with its content.

Example: “He declared that psychoanalysis was unscientific because it wasn’t falsifiable, and therefore worthless. The demarcation guillotine: one swing of the criterion, and an entire tradition is decapitated.”

Demarcation Guillotine by Abzugal May 22, 2026