I’m a fairly hardcore/radical determinist, and tend to agree that individuals shouldn’t be held morally responsible for actions, any more than a hammer is morally responsible for driving a nail. However, that does not mean people should be free from consequence. There are plenty of reasons - even as a hardcore determinist - to hold people to account for their actions, either as a social corrective mechanism, public safety, deterrent, or personal sanity.
As for getting their actions to align with your morals, that’s a more complicated question that depends on the type of person they are.
One interpretation would be Many Worlds; that is, every quantum possibility is real in its own multiversal branch. So, to assign moral agency you would need to show that I chose the world I’m in now, over some other version of my life in which different choices were made. Although, I’m not certain you even need to go that far: I have no idea to what degree quantum randomness can actually affect our choices. But, in any case, that too would be out of our control.
Doesn’t that imply that people have the ability to change their behavior?
My answer changes depending on your meaning but:
Of course. My brain is constantly updating and improving itself. I’m just not ultimately in control of how that process happens. Though that does not mean that I should stop living. I can still experience and enjoy my life, and ‘choose’ to improve it. It’s just that the I that made that choice is a consequence of my brain calculating optimal paths based on a myriad of factors: genetics, culture, circumstance, biological drives, personal history, drugs, etc.
What drives the thing that drives the hammer? What drives the thing that drives the thing that drives the hammer? What drives the thing that drives the thing that drives the thing that drives the hammer?
I believe consciousness is a result of processes of the brain, and the brain is a very complex machine. It’s hard to say anything too concretely beyond that because I don’t really understand how it works. I live as though the brain and my consciousness are in perfect sync, but I’m unsure how true that is.
We are constantly making and updating our choices in response to new information. Just because the brain decided upon one course of action at one point in time does not preclude it from changing course in the future. That’s just a new choice. All available information is taken into consideration at all points in time.
By determined, I mean it follows a logical set of rules, not that it is set on a specific action. The idea would be that it was determined to make all those choices because everything else is also following the rules of the universe. Just as it was determined that they play in traffic, so was it determined for me to tell them to stop, just as it was determined for them to listen. They didn’t choose to change their mind, they were always going to change their mind.
That’s one way of seeing things, and I respect that viewpoint, but I disagree. I primarily view myself as my consciousness; everything else is secondary. How do you know you aren’t a brain in a vat?
What's the best response to someone who believes in hard determinism but also uses this to deny responsibility for any immoral actions they commit?
That is, they think all of their decisions were preordained, and then use this to claim that they can’t be held responsible for anything they do.