 The term “science” has both an individuated and an unindividuated sense. In the individuated sense, biochemistry and astronomy are different sciences, one of which includes studies of muscle proteins and the other studies of supernovae. The Oxford English Dictionary (OED) defines this sense of science as “a particular branch of knowledge or study; a recognized department of learning”. In the unindividuated sense, the study of muscle proteins and that of supernovae are parts of “one and the same” science. In the words of the OED, unindividuated science is “the kind of knowledge or intellectual activity of which the various ‘sciences‘ are examples”.