Human nature is the best form of reasoning.
Reasoning that addresses the nature of yourself, or of others, is philosophy.
Reasoning that addresses the nature of the world is science.
Philosophy and science will influence us, including how we reason. Consequently reasoning becomes a cycle where it changes our philosophy and science, which changes our reasoning processes, which changes our philosophy and science.
Ultimately what is changed is our very nature, and this continues to change through a positive feedback.
For these reasons I believe human nature is responsible for the most productive and effective reasoning.
This is definitely better and easier to understand ... nice....