For philosophic reasons, such authors might modify or reject verifiability, falsifiability, and logical non-contradiction. Popper proposed falsifiability as an important criterion in distinguishing science from pseudoscience. Chromotherapy has also been criticized for its lack of falsifiability and verifiability. "Skeptical Inquirer" magazine criticized the lack of falsifiability and testability of these claims. Popper's falsifiability resembles Charles Peirce's nineteenth-century fallibilism. Using this criterion of falsifiability, astrology is a pseudoscience. He advocated empirical falsifiability as the criterion for distinguishing scientific work from non-science. Popper holds that scientific theories are characterized by falsifiability. Science and non-science are often distinguished by the criterion of falsifiability. Correspondence is generally tested by empirical analysis and conditions of falsifiability. If the outcome is inconsistent with the hypothesis, then the hypothesis is rejected (see falsifiability). Popper argued that the central property of science is falsifiability. In modern science falsifiability is generally considered important. In particular, introduced a formal notion of cryptographic falsifiability. This is related to Popper's discussions of falsifiability in his works on the scientific method.