  This essay addresses the implications of integrated information theory (IIT)
for free will. IIT is a theory of what consciousness is and what it takes to
have it. According to IIT, the presence of consciousness is accounted for by a
maximum of cause-effect power in the brain. Moreover, the way specific
experiences feel is accounted for by how that cause-effect power is structured.
If IIT is right, we do have free will in the fundamental sense: we have true
alternatives, we make true decisions, and we - not our neurons or atoms - are
the true cause of our willed actions and bear true responsibility for them.
IIT's argument for true free will hinges on the proper understanding of
consciousness as true existence, as captured by its intrinsic powers ontology:
what truly exists, in physical terms, are intrinsic entities, and only what
truly exists can cause.
