Randolph Clarke argues that the following thesis is false: If incompatibilism is

true, then for a human agent to perform a directly free action, the agent’s exercise

of causal power must not be governed by any laws of nature, not even by probabilistic

ones. That is, he argues that the exercise of free will could be governed by

probabilistic laws of nature. This paper argues that (i) this ‘Anomic Thesis’ is true

and (ii) any agent-causal libertarian account of free will is adequate only if it is

consistent with that thesis. (ii) is true because any libertarian account of free will

is adequate only if it recognises that free will is exercised autonomously if at all.

And if the exercise of a causal power is governed by probabilistic laws of nature,

then that causal power cannot be exercised autonomously.