10k Philosophy challenge I'm not drawing a sharp distinction between mental and physical constraints, I'm simply pointing out that having a habit isn't a proper constraint in the sense of restricting your freedom. No is social conformity etc. Laws are a restriction of freedom because they come with a threat against said freedom attached.
I'm not sure what you take the opposite assertion to be in this context, so I don’t know whether i agree or not.
I mean, I certainly wouldn't go so far as to say that external states can't cause internal states, but yes I would agree with the general point that free will requires our actions to be caused by us in a way that is not just a part of a deterministic causal chain. And yes, I would agree that we need to be able to understand it a bit. And I think we do understand it a bit. Not fully, but given that what we are trying to protect is a person's ability to understand and make choices, and we can understand the ways in which that can be prevented from happening (or many of them at least), then it seems like we can get some good protecting done without having a full understanding of how free will works.
No, I'm perfectly happy to say that a state of mind could reduce freedom. I just don't think that the ones you are talking about do.
Perhaps I can clarify with an example. Let's say I choose to chop off my leg. This prevents me from doing a bunch of stuff with it in the future, but this is not problematic. So long as I am choosing to remove/destroy the thing, then I am choosing to give up those things and therefore my freedom over them.
In the same way, if I choose to have a sandwich for breakfast instead of eggs on toast, I might be giving up the other (I mean, I could have both, but I wouldn't want to), but it's my choice to make (assuming some things about access to the foods in question). The making of the choice doesn't restrict my freedom, it exercises it.