The boundary between scientific and nonscientific knowledge

Feyerabend's objectionst against a canonic view of science have shown that scientific evidence is less cogent and sound than epistemologists were fond of believing. Hence the problem arises of the border between science and nons-cience. The paper shows it is fuzzy. A number of disciplines, including philosophy, cannot be pursued with the same standards of rigour hard sciences are, yet they lend themselves to rational inquiry.