Abstract
The problem of Free Will is an important topic in religion, philosophy and neuroscience. We will introduce a new model of free will: free choice under constraints. Under outer and inner constraints, human still have the ability of free choice. Outer constrains include physical rules, environment and so on. Inner constrains include customs, desires, habits, preferences and so on. Given a specific context, human have the ability of deciding Yes/No on a specific preference. The free choices are caused, but not determined, by the outer and inner constraints.
In addition, the free choices will refashion the inner constraints. Preferences are gradually formed by human, thus they may be gradually de-formed by human. Human can keep the positive preferences, while de-form the negative preferences. When we de-form the negative preferences, we have the chance to pursue another new possibility. So are scientists. They can keep the positive aspects of the known theory, while eliminate the negative aspects. When they eliminate the negative aspects of old conceptual schema, they have the chance to pursue another new conceptual schema.