A note on the book “The Science of Freedom”

The book presents Koppel’s argument for the existence of free choice (pages 220-230).
Number of comments
A: The Rabbi divided (or folded) between three series: a random series, a semi-random series, a semi-fixed series, and a completely fixed series. Where do we find that completely fixed series? After all, even if all the terms are arranged among themselves in complete coherence, who determined the value of the first term (and fills them all)?
B: The rabbi rejected Koppel’s claim on the basis of the derivation of the series to the life of the individual and since it is again a finite series with a model, etc., how can one refute the claim on the basis of a private derivation? After all, any infinite series that we derive will become a finite series if the derivation part is derived?
The question should be asked in a different way, because according to the (agreed upon?) assumption that our world is a finite world and not infinite, even without a derivation, it is a finite series and at the end of the world (no matter which one) it will turn out reactively that the series is a modeled=deterministic series.
As a possible solution I will propose dualism with the addition of the permanence and immortality of the soul (Plato, I think).