When shall we use our heads instead of the formula?

Meehl, Paul F.2017-02-242017-02-241958Concepts, theories, and the mind-body problem. Minnesota studies in the philosophy of science, Volume 2 (1958), page 498-506https://hdl.handle.net/11299/1846121 online resource (PDF, page 498-506)enWhen shall we use our heads instead of the formula?Article