Appeal to authority will not change the basic logic.
You don't employ logic, and appealing to authority is reasonable when what is being appealed to is authoritative: hence if you have toothache you don't consult a plumber.
Perhaps I have not been very adept at explaining, so I will try once more.
True, but go for it anyway.
First let me dispense with the determined versus random red herring. Of course a conscious choice is determined, but determined by what?
All the influences, preferences and assessments of circumstances processed by your brain. some of which you may not be aware of.
If the determining factor is defined by physical events, then it can be nothing more than an inevitable reaction because we have no control over how physical events react. No amount of biological complexity can change the basic premise that the outcome of every event in a material brain will be determined by the laws of physics.
And? One of these 'physical events' is the biology that allows you to think but you do like to argue from consequences that you don't like.
This effectively would mean that our conscious awareness will be just a spectator over what is determined by physical reactions of the electro chemical activity in our brain.
Not if it is an integral part of the overall process.
But our perception is that our conscious awareness is not just a spectator, but a driver of our conscious choices.
That isn't my perception - perhaps you are creating problems for yourself by insisting on trying to detach conscious awareness from all the other activity going on in our brains instead of seeing it as an aspect of a wider process.
For our choices to be driven would mean something is capable of consciously inducing events which control the driving process.
Which is what brains do.
This is where the concept of spiritually determined comes into play. Another red herring is the claim that there is no effective difference between spiritually determined and physically determined.
Nope: no red herring here, and this is where you fall into logical incoherence.
The difference is obvious - physically determined events are determined by the laws of physics.
So what!
What determines our will derives from our conscious awareness, which must have the power to consciously invoke an act of will within the physical brain. If our conscious awareness comprises nothing more than an emergent property resulting from material reactions, it will have no power of control within itself. Our freedom to exert control can't be derived from material reactions alone.
Yet it seems to be just 'material reactions', Alan, whether you like it or not, although you are attempting to over-simplify and under-play 'material reactions' to suit your arguments from consequences: and of course this is also where your personal incredulity kicks in.
No doubt this post may bring about some deep, well thought out responses which endeavour to show that I am wrong and that everything must have a physical explanation, but these responses will themselves provide evidence of the responder's ability to consciously drive their own thought processes.
There you go again - trying to insist that conscious awareness and directed thinking are somehow separate from our biology rather than seeing them as complex aspects of our biology: you do this in order to contrive a gap to drop your God/soul notion into and preserve you particular take on faith.