Hence we are back to the old puzzle of reconciling our feelings of free will with the fact that all of our decisions are ultimately completely determined by factors outside of ourselves.

The part I bolded is never necessary, is it? Factors in the deterministic processes in my brain are factors inside myself, by definition. Is there really still a debate about free will? I'm at a loss to understand why. The subjective perception of free will is easily explainable in a fully deterministic world.