The source of a genetic fallacy, perhaps.
It doesn't matter what the source of the configuration is. What matters is the product, and the fact that it does, in fact produce wills.
Where something comes from does not in fact have any power to limit what it actually is in the moment.
You are in fact engaging in a parallel (and utterly dishonest) form of argumentation that I was introduced to (and subsequently encouraged to use, but did not, because it was utterly dishonest) of the form "were you there?"
This argument form is usually used by YECs and goes something like this:
"Our world is old and evolved"
"You say that, but were you there? I have a book by someone who claims to have been and the book says it is a young earth"
It is a demand for an inaccessible piece of evidence as an excuse to reject the facially apparent evidence that one does have.
I wasn't there but the rock was, and it says it's old, through it's structure. Rocks have a harder time lying than humans on account of the fact that rocks can't chaotically reconfigure themselves any which way, whereas humans can.
Which is the point. Where did the will come from? It came from the fact that an "image" is nothing more than an object which has physical properties which when presented to various other objects will act as a
transform on some set of object relationships within the various other objects they are presented to.
The paper is a will acting upon the mechanical piano, and is such because it is a set of physical objects arrayed to
instruct the behavior of other physical objects.
The array of bits in memory is a will acting upon the dwarf (which also happens to be an array of bits elsewhere in the memory), a set of physical objects arrayed to instruct the behavior of other physical objects.
Some wills merely act, they cannot be unfree (such as Bilby's will over how their dog acts). Other wills can be constrained from reaching certain instructions: the piano's will is free to the end, assuming that I don't stick a pin between the gears. I can constrain it's will, making it unfree, the unfreeness literally being the fact that the force of the spring has no path to transit to the roller.