Should incompatibilists be libertarians

This is to be found in Hasker's book Metaphysics.

1. If determinism is true, then human beings are not responsible for their actions.
2. But it is clear that human beings are responsible for their actions.
3. Therefore determinism is false.

1. If determinism is true, then human beings are not responsible for their actions.
2. But is is clear that we ought to believe that human beings are responsible for their actions.
3. Therefore, we ought to believe that determinism is false.

Let us assume that a person is persuaded that incompatibilism is true. If that is so, then do we accept, in the absence of overwhelming evidence that determinism is true, that it is false.