a) it is a theory of "scientific rationality"
    b) it holds scientific knowledge is expressed liguistically
    c) it holds the empiricist view that the source of scientific knowledge is sensory experience
    d) it holds that there is a distinction between observation statements and theoretical statements
    e) it holds the view of fallibilism with respect to theoretical statements
    f)  it holds a "deductive-nomological model" ("DN Model") of scientific explanation
    g) it holds a "hypothetico-deductive model" (HD Model) of the justification relation between statements of  observational  evidence and statements of  theoretical hypotheses or "laws".
    h) it holds scientific knowledge consists of a hierarchy of statements erected upon an empirical foundation of observation statements
    i) it holds the sciences are unified by a common unchanging method
    j) it holds a strong distinction between context of justification and context of discovery
    k) it holds a normative philosophy of science