The epistemological consequences of theory of subsistence of issuing

With his particular approach to the truth of science and knowing its existence, Sadra's theory of subsistence of issuing has better and more uptodate explanatory power than other perceptual theories This fundamental turn in expressing the truth of science has ontological, anthropological and epistemological consequences. In this article, we intend to express the epistemological consequences, criticize and evaluate them;among these consequences, we can mention the problem of matching mind and object, the occurrence of errors in perceptions, and the relativization of knowledge in this theory. Although Sadra considers the similarityand correspondence of perceptual forms with their relations as assumed or selfevident, it seems that the theory does not have enough ability to prove or justify the complete compatibility of perceptual forms with external objects, ultimately it can prove the compatibility between perceptual and external forms that is useful for interaction and understanding between people. From Sadra's statement regarding the number of external objects as a necessary condition and the support of higher principles as a supplementary condition, a guarantee for compatibility can be inferred. Also, the existential strength of the soul as the subject of perceptual forms, by reducing the possibility of error in perceptions, can guarantee better and more exellent matching of perceptual forms with its standard. Since the theory of subsistence of issuing the circle is active and the existential strength and weakness of the self plays a vital role in how to achieve perception, this theory seems to imply a kind of skeptical relativity in knowledge.