DBT
Contributor
Here is Strawson's article on the Impossibility of Moral Responsibility.
And here is an An Interview with Galen Strawson which took place 10 years after the paper you cite. In this interview he makes it clear that he accepts the everyday sense of moral responsibility (he's arguing against the kind of responsibility beloved by those who have been seduced by the "freedom from cause and effect" paradox.).
Strawson said:but I just want to stress the word “ultimate” before “moral responsibility.” Because there’s a clear, weaker, everyday sense of “morally responsible” in which you and I and millions of other people are thoroughly morally responsible people.
Reading the interview, it seems that Strawson had become somewhat spiritual in his latter years. It changes nothing as far as the argument goes. The given definition of determinism still does not allow alternate actions, and as the action that is taken is necessitated by information exchange between the environment and brain, freedom of will remains incompatible with determinism.
Why the concept of free will is incoherent;
''The concept of free will is something that evades and ignores, and chooses not to consider, the very fundamental process in nature. When we say we have a free will, what we’re saying is that our will is free of causality. To say we have a free will is to say that what we decide is free of a cause. Since every cause has a cause, the cause of our decision would have a cause, and suddenly we find we have a causal chain stretching back to before we were born. That’s why the concept of free will is incoherent. You can’t have things that happen without a cause. For the sake of discussion and exploration, let’s say that something can actually happen without having been caused. If that something was not caused, there is only one other option. The decision must be random, or indeterministic in their strongest sense of being uncaused. It has no cause at all; it just happens.''
''The concept of free will, when you think about it, is internally inconsistent. It’s not logical. If you define the will as volition, or that part of our mind or self that makes decisions, and you say that volition is free of what it can’t control – free of causality, free of our memories, free of how we’re conditioned. The definition just doesn’t make sense. Essentially, the term free will means that we are doing what we’re doing, and saying what we’re saying, and thinking what we’re thinking, completely of our own accord. By logical extension, that belief leads to the conclusion that we do all of what we do for no reason. As soon as you say “I made this decision of my own free will because, for example, it was the right decision, or because I wanted to be a good person, you’ve introduced a cause. You’ve introduced the chain of cause and effect. Once you say you’ve made a decision because of something – because of anything – then you must acknowledge that that cause has a cause, and that cause has a cause, etc.''