Portrait of Karl Popper
. Franz Barta; LSE Library, circa 1980. No known copyright restrictions, via Wikimedia Commons. Source. Articles by others on the same topic
Karl Popper (1902–1994) was an influential philosopher of science and political philosopher, known primarily for his contributions to the philosophy of science and the philosophy of language. His most notable ideas include: 1. **Falsifiability**: Popper is famous for arguing that the demarcation between science and non-science should be based on the criterion of falsifiability. He asserted that scientific theories must be able to be tested and potentially disproven through observation and experimentation.