I would also hypothesize that, in practice, the way this usually happens is that some physiological or environmental shift results in different reward signals. Then, insofar as the brain is treating the reward-signal-stream as evidence of some coherent underlying values, it makes sense for the person to feel like their reward-signal-stream was reasonably-consistently pointed at one set of values during one time period, and a different set of values during a different time period.
Agreed.
I would also hypothesize that, in practice, the way this usually happens is that some physiological or environmental shift results in different reward signals. Then, insofar as the brain is treating the reward-signal-stream as evidence of some coherent underlying values, it makes sense for the person to feel like their reward-signal-stream was reasonably-consistently pointed at one set of values during one time period, and a different set of values during a different time period.