In archaeology, definitions of the term empiricism are varied. In one sense, empiricism refers to the lack of specific archaeological theory due to the concreteness of archaeological materials and the craft-like character of archaeological methods from excavation to data analysis. As a philosophical term, empiricism denotes a more specific genealogy of epistemological positions in archaeological theory. In epistemological terms, empiricism in archaeology varies from the naive inductivism of culture-historical archaeology to the logical positivism of New Archaeology. Lately, empiricism has been revived as a speculative attitude in the epistemology of archaeology after the ontological turn.