Free will is basically the <i>feeling</i> of experiencing a mind that operates in a certain way. Just because you don&#x27;t know what the requirements are doesn&#x27;t mean it doesn&#x27;t exist. You could just as well say &quot;love doesn&#x27;t exist&quot; because physicists don&#x27;t have a great model of what causes it.<p>Sure free will exists; it just isn&#x27;t a objective natural phenomena to be studied under the domain of physics. It&#x27;s an emotion. It&#x27;s what happens when you brain builds counterfactual models of its own behavior. It&#x27;s really no different from things like pride and regret -- you experience them only because you can imagine a reality different from the one you are in. There needn&#x27;t be any physical mechanism for predicting the construction of those realities.