Ayer’s “Freedom and Necessity”

What is Ayer’s view? Is he a determinist or indeterminist, is he a compatibilist or incompatibilist, and does he think we do or do not have free will?

Campbell thinks someone does some act freely iff they could have done something other than that act. Ayer disagrees. What are all the reasons why Ayer thinks Campbell’s requirement is wrong? What account does Ayer give instead? And why does he think his account is true?

You might also think about what Campbell and Ayer say as it applies to things we think are not free, or things we might wonder about. Are animals free? Severely retarded people? Robots? What is required for such things to be able to act freely?