[coldtea]

>I don't see how personal responsibility wouldn't be possible without free will.

Responsibility is not about punishment or lack thereof. That is just a mechanism to encourage responsibility, not its manifestation.

Responsibility is about being able to do X or Y and choosing right.

A rock is not considered responsible because we don't think it has free will. If a rock falls on one's head and kills them, that's it. We don't jail it.

In most jurisdictions we don't even hold people that are mad as responsible for something they committed for the same reason (the US is kind of Old Testament backwater legally so this might be different there). They don't go to jail etc.

>Society decides the consequences for wrongdoing (and positive reinforcement). Free will or not an entity is affected by the consequences of ones action (if it is able to realize those consequences).

Without free will there is no "decides".

Everything is pre-decided.

It doesn't even matter if one is guilty or not -- the decision to jail them or not is already made before they committed anything and is independent of their actions.

[tjoff]

> In most jurisdictions we don't even hold people that are mad as responsible for something they committed for the same reason (the US is kind of Old Testament backwater legally so this might be different there). They don't go to jail etc.

It depends on your viewpoint, but the reason for why they don't go to jail etc. is because it doesn't match the intent with jail. Jail is meant as a deterrence as well as shielding the society. If it doesn't work as a deterrence and we have better ways to shield the society from it happening again (which is "easy" to argue in regards to a mad person) then it doesn't make sense to force it upon people where it will do more harm than good (we still do it do a large extent, but society also benefits from its inhabitants believing that the system is fair and that is a difficult balance).

> Without free will there is no "decides".

This also depends on your viewpoint. A computer takes tons of decisions but they are all based on a given set of inputs, as will society (regardless of whether free will exist or not).

[coldtea]

A computer doesn't take any "free will" decision of its own -- everything is determined at the time the program is written/loaded.

"Doing X if Y" is not a free will decision if it's already encoded. In a sense it's not a decision at all. When X, the computer will do Y, period.

(And this also applies if we add some stohastic elements in the mix).

[ajuc]

> everything is determined at the time the program is written/loaded

Computer can measure random event and do something basing on that.

> is not a free will decision if it's already encoded

Most probably so is our "free will".

[tjoff]

A computer doesn't take any "free will" decisions. But it does make decisions, based on rules that the programmer gave it. Everything about the program is determined, but the inputs to the program is not necessarily deterministic and is also completely orthogonal to free will. We can still have true random events, that doesn't imply that free will exist.

The actions of a computer making decisions based on a noisy, nondeterministic source, can not be predicted.

From your previous post: It doesn't even matter if one is guilty or not -- the decision to jail them or not is already made before they committed anything and is independent of their actions.

The decision to jail them depends on whether they are found guilty. Whether they are found guilty depends on the information available at that time. What information is available is not deterministic even in a world lacking free will.