Perdition writes:
At the bottom, all decisions are electrical currents and chemicals in the mind. As such, they are subject to the laws of chemistry and physics. I do accept that quantum effects could become involved, but that still doesn't really admit free will, it just admits the possibility of a range of possible outcomes.
Quantum effects are not required to get around determinism.
One way or the other, more information on how the brain and mind work is required before anything can be concluded.
However, in the mean time, think of this:
Yes, all decisions are electrical currents and chemicals of the mind.
However, the mind has the ability to change those very electrical currents and chemical reactions due to our conscious thoughts and decisions.
Therefore, the fact that all decisions are electrical currents and chemicals of the mind is not enough to show that they are, indeed, deterministic. Since the mind can alter these very same electrical currents and chemicals at will, in some fashion of a feed-back loop, more information on exactly how this "feed-back loop" works is required.
A quick, basic, simple example:
Let's say that if chemical A is used and electrical currents 1 and 2 fire, I will put my left sock on before my right one.
However, if chemical B is used and electrical currents 3 and 4 fire, I will put my right sock on before my left one.
Now, since the conscious brain has some control over which chemicals are used and which electrical currents are fired... I can manipulate my mind in such a way as to force chemical A and electrical currents 1 and 2 to be used, or force chemical B and electrical currents 3 and 4 to be used. Therefore, I can choose to put on whichever sock first I'd like.
This may or may not be the way things are, but we don't know yet, more information on how the brain and mind work are required.
However, this little scenario is enough to show that strict-determinism is not a must-be-true answer... yet, regardless of the effects of the quantum world.
We'll see.