"understanding" in humanities and natural sciences, with a look at Stephen Grimm's point of view

In all periods of history, human has been trying to "understand". In order to understanding the natural world, scientists first observe samples and then classify them based on similarity. To figure out the actions of people, the matter seems different. To achieve this, we need to understand the intentions of people. Because intention has psychological nature, there is always a concern from empiricists that it may not be perceptible by third-person people. To some extent, many human actions are perceptible from a third-person point of view, and this causes them to be the subject of scientific investigations (with common scientific methods). However, there are cases that show the understanding of human activities from the third person of view has limitations.Stephen Grimm introduces a type of understanding and believes that by realising the specific goals of the person being understood as a desired action, we will achieve a deeper understanding. In this article, an attempt has been made to clarify the discussed issue first by proposing and interpreting Stephen Grimm's point of view, and then by proposing the problems and explaining the ambiguities of Grimm's idea, as an alternative formulation, we will show that the agent's decision for understanding or not understanding the actions of others, plays an important role. Empathy is known as a psychological capacity that can be understood in a different way by simulating the structure.Investigating and looking deeper into this issue will help us to judge it better as a method or an idea in social and human sciences.