Twentieth century philosophy of science was largely dominated by logical empiricism. More a framework for doing philosophy of science than any coherent set of doctrines, logical empiricism addressed a range of issues in philosophy of science through the lens of the logical and mathematical structures constitutive of scientific thought and practice (see the entry on   logical empiricism). Logical  empiricism tended, by and large, to focus on abstract, epistemic features of science, with little attention to scientific practice. Physics was the dominant exemplar.