Epistimology study is a science that examines how structures, methods, and science. And epistimology in the devide into 3 streams:
Empirism: is a steady flow that all knowledge ia gained through the senses. Indra gained the impression of a real impression, then the impression of the impression gathered in man so that the experience.
Rationalism: the source of knowledge of rationalism is resourceful. The intellect himself acquired the material through the senses, then in the senses that it became knowledge.
Positivity: the established flow that the truth is gained with reason, supported by the measures empirical evidence. Philosophy of positivism is of the view that all phenomena are subject to the same natural law.