> It seems like, punishment would need to be interpreted purely as societal cost. So you tally up the wreckage from the car accident example above, say $25,000 and 2 lives.

I don't think so. I think determinism makes "punishment" as a concept, completely nonsensical--you can't punish someone for something they didn't choose to do. I think determinism pushes the focus to rehabilitation rather than punishment, which for many types of crimes (i.e. drug use, computer hacking, nonviolent robbery) is clearly more effective in preventing recidivism (and I'd argue that for crimes where it's not effective, that we haven't really explored rehabilititation because of the widespread belief in free will).

> I don't really see how we can have both manslaughter and murder, without free will. What extra thing did the angry guy do? He didn't make a choice, because (for the sake of argument) he has no free will. What is the characteristic that makes what he did worse? The cost to society is the same.

Agreed. But does this highlight a problem with a deterministic world view, or does it highlight a problem with the distinction between manslaughter and murder?