“This term serves to contrast our worldview with philosophy in its usual sense, as a doctrine about the world that claims to stand side by side with the scientific disciplines, or possibly even above them. In our opinion, anything that can be sensibly said at all is a proposition of science, and doing philosophy just means examining critically the propositions of science to check whether they are or are not pseudo-propositions (that is, whether they really have the clarity and significance ascribed to them by the practitioners of the science in question); and it means, further, exposing as pseudo-propositions those propositions that lay claim to another type, and a higher degree, of significance than the propositions of science.”