Fleck criticizes normative epistemology as a method of producing scientific facts on the basis that it is rather “obsolete” (Fleck, 51). According to him, there are three stages for the construction of scientific facts. the first stage involves the signal of resistance in confused thinking on a person at initial stages of thinking, followed by a more definite thought construct and lastly, the thought produced is expressly apparent (Fleck, 95). The scientific facts contain both active and passive aspects which are aligned with controls forced by the thought- styles and possible impacts they may have. The facts increase with time while the wide range of differences in ideas decrease as the new ideas become constrained with time. He uses a model exhibiting the thought process in which thoughts are depicted using intersecting strands. The facts in the model function as nodes which merge and then diverge into many strands of different types of research. With the decrease in arguments and criticism over time, the model leads to the production of new scientific facts. As such, the model is more efficient and leads to escalated knowledge development.