How to understand the objectivity and certainty of legal reasoning

First, reasoning is a thought process of discovering new knowledge. Whether it is from the "original" premise necessarily leads to a new conclusion of the proof of the reasoning, or from the "generally accepted opinion (premise)" contingently leads to a new conclusion of the dialectical reasoning, reflecting the rational thinking of the pursuit of new knowledge. Secondly, reasoning, especially dialectical reasoning, not only refers to personal thinking or internal "thinking", but also has the characteristics of public argumentation such as "debate and discussion". This feature reflects the social relations between people. It is through the use of public debate, people can prove the truth of the thesis or the truth of the conclusion, and play a role in resolving disputes, to convince people.