Some contemporary scholars consider that the logical science of Kalam was patterned apologetic, and dogmatic. This kind of scientific logic makes the Science of Kalam less responsive to developments and changing times. This paper therefore  intended to assist the reader in understanding to the assessment. it can be traced through a review of philosophy of science, especially the distinction context of discovery and the context of justification a science. At Science of Kalam, the context of the invention relates to the formulation of science of Kalam based on al-Qur’an and as-Sunnah and residues historicity attached to it. This context shows this pattern of subjective knowledge that actually assessed objectively by the Muslim majority. While the context of justification Kalam can be observed in denial and rejection of the belief that different Mutakallimun using dialectic (al-manhaj al-jadalî; jadaliyyah)and strengthened by evidence demonstrative rational method (al-manhaj al- bahtsî;bahtsiyyah). There are two forms of demonstrative methods commonly used by Mutakallimun, namely analogy and syllogism. The linkage of two kinds of basically a form of scientific logic of Kalam with a pattern on top.