Syllogistic fallacies are formal fallacies that occur in syllogisms. In her paper "Stoic Syllogistic" Bobzien sets out the evidence for Stoic syllogistic. In antiquity, two rival theories of the syllogism existed&colon; Aristotelian syllogistic and Stoic syllogistic. There are also invalid immediate inferences which are syllogistic fallacies. The fallacy of four terms is a syllogistic fallacy. He developed an original "temporally modalized" syllogistic theory, involving temporal logic and modal logic. It is thus a syllogistic fallacy. Matching bias has also been shown to generalise to syllogistic reasoning. Thus, as in the earlier categorical syllogistic form, the conclusion is formulated from some premise(s). For traditional syllogistic logic, see the list of topics in logic. This advancement was different from the traditional syllogistic logic which was focused on terms. Ibn Taymiyyah argued against the certainty of syllogistic arguments and in favour of analogy ("qiyas"). Nonetheless, problems with syllogistic logic were not seen as being in need of revolutionary solutions.