More Ruth Chang on the issue of choice:
The key thing about parity is that it opens up a new way of understanding rational agency that is a substitute for the usual Enlightenment conception according to which we are essentially creatures who discover and respond to reasons. On that view, our agency is essentially passive – our reasons are ones given to us and not made by us. Our freedom as rational agents consists in the discovery of and appropriate response to reasons given to us and not created by us. Parity allows us to see that our agency may have a role in determining what reasons we have in the first place. So we might be free in a deeper sense – we are free to create reasons for ourselves under certain conditions.
Dr. Chang’s TED talk and NY Times article are written for a more general viewer/readership. This interview is far more academic in its content, but interesting if you have a philosophical bone in your body.