No, it makes it very difficult to locate any boundary between "you" and the preceding history. Dualism is when you simply declare a border.
edit: If everything is "within physics," saying that the preceding history isn't relevant to the process of choice is a declaration that cause isn't relevant to effect. It's an arbitrary assignment for culpability's sake, which is a moral judgment, not a physical or logical argument.
If you don't assign different relevance to different causes, you can't say that you are a less relevant cause than the preceding history. Relevance is a practical requirement, without it you, say, can't improve Tesla autopilot, because the cause of the crashes is big bang, and you can't do anything to fix that cause indeed.
That is if you assume the world is Markov, but in our granularity of thought and limited perception, the only way we can reconcile subsequent observations is through history.
In other words, you can't peer into the universe itself at any individual moment to observe all properties because you have access to partial information, the world could be markov, but the lack of your perceptive abilities requires that you treat it as non markov.
For example, given a moving object such as a ball, at any particular instant, you do not have access to enough information to estimate velocity, but if you have access to more frames, you can do some algebra and figure it out.
In the vein of cause of actions, since you have limited access to information, especially about you and your brain, you can not decide whether certain events such as having a good day affect your decision making abilities. Your state is part of the environment you do not really have access to it affects your behavior.
I disagree. To be precise, I disagree with the notion that our choices are ours, as you said and that they are not dependent on history.
A choice is conditioned on a myriad of things, from whether you had your coffee in the morning 8 hours ago and the milk had gone bad, to whether your parents paid attention to you 20 years ago when you were a child.
Literally everything matters because experiences shape our brain's structure and that is precisely one of the factors that need to be accounted for in some cases. Not necessarily what one's own brain structure is like, but other people's as well, so as to gauge and expect their reactions to our decisions.
If the universe is Markov (which also means hidden variables as a means of predicting quantum processes which iirc was disproven except when said hidden variables were traced all the way to the beginning), then the current frame has enough information to fully describe all future states.
However, regardless of whether it is Markov or not, we, humans, need history because it enables us to generalize and approximate the future because we do not have the capacity to peak into the exact state of the universe at any given point.
While the process of making decision needs a short amount of time, the decision itself is conditioned on history and we need history to make predictions because we lack compute.
"Literally everything matters" -- not necessarily. The world is full of stable attractors that turn any number of small perturbations meaningless. Coffee turning bad might influence you decisions a few hours down the line, but likely not months, being half a degree warmer or colder likely won't influence you at all. Meeting an impressive person as a child might change you greatly, but the other thousands of people you've met in passing likely won't affect you much.
> That still means you are the proper cause of your actions. The preceding history exists too, but isn't very relevant to the process of choice.
How is it not relevant to the process of choice when it fully determines all aspects of it including the outcome? It is as relevant to the process of choice as the choice itself is to the action it produces.
AFAIK, in physics this property is called indempotence: the choice is determined by the state of mind at the time of the choice and not by history that led to that state. Theoretically many different histories can lead to this state, or the history may not exist at all, if mind was created in this state 5 minutes ago, in all these cases the subsequent behavior will be the same.
Theoretically, yes. (Good point!) But the number of variables is large enough that I think you can discard the many different histories as well as the non-existent history.
