But if my intention does not influence the action then my being engaged in the action is not controlling the action. I wouldn't even say that the action is intended (intentional). — litewave
When we characterize an intentional action we often use a verb phrase that doesn't merely describe the bodily motions of the person who is acting but also the ends that she is pursuing. For instance, we might say that she is (intentionally) making an omelet. And this explains why she is heating the frying pan, breaking eggs, chopping up mushrooms, etc. All that purposeful activity is geared towards realizing the end characterized as "having made an omelet". As long as the person is performing this overarching action intentionally, all the component actions that are means towards that end are being performed by her thanks to her understanding them to be such necessary means. So, I am suggesting that what makes the action intentional under such a description (i.e. "making an omelet") is the fact that the agent is pursuing that goal while being able to deliberate practically towards realizing that goal; that is, judging what the necessary means are and executing them for that reason.
So, yes, you may say that the intention influences the action, but that is merely to say that the agent's self-determination of her own goals and her ability to reason instrumentally towards achieving them, explains how her basic actions are being structured by her while her overarching action progresses.
I would say that my intention to express something verbally causes the related words to come to my tongue. For example if I intend to communicate to someone that I have the feeling of hunger, this intention draws the word "hunger" from my lexical memory and pushes it to the speech center in my brain which activates my tongue, lips, breathing and so on in such a way that the sound of the word "hunger" is produced. I guess this is roughly the causal neurological process.
It seems doubtful to me that there is a wordless thought process that operates upstream from any of our exercises of abilities to use words when we are reasoning or forming intentions. And, in fact, I think there might be evidence to the contrary from cognitive neuroscience. but if you don't accept this then my Rylean example will not be helpful.
I may not absolutely need, however, to appeal to this Rylean model in order to argue that freely chosen courses of action need not be controlled by prior intentions that themselves are chosen intentionally, as you suggested in your original post (as an alleged requirement of libertarian free will). Even if we construe the forming of an intention as a purely mental act, that occurs prior to acting, and that controls our actions, there still need not be a separate act of choosing to intend in this way in order that the intention be free and that we be responsible for it.
As Fafner suggested, for an intentional action to be free in the relevant sense that secures the agent's responsibility, the source of the intention must be the agent herself rather than antecedent causes that lay beyond the scopes of her control and agency. But if, as I suggested, what the formation of an intention essentially reflects is the agent's sensitivity to the practical considerations that, by her own lights, make it reasonable and intelligible that she would pursue this intended course of action, then she is a free as anyone may wish to be when she so intends.
As I also suggested, such an explanation of action looks very much like a compatibilist account. But it is crucially distinguished from standard compatibilist accounts in an important respect. If what grounds the agent's decision is her being sensitive to the features of her practical situation that make it reasonable, by her own lights, that she ought to so act, then her actions aren't determined by prior causes that have receded in the historical past and that therefore lay beyond her control.
It seems that the part "is manifested in" can be easily substituted with "causes".
It can't be so substituted since what is being manifested in intentional action is the agent's sensitivity to the reasons why she acts and the rational outcome of this sensitivity isn't caused by past events. Such a capacity is only, at most, being enabled by the past history of the agent. We are not free the become rational agents because we are relying on our having suitable biological and social endowments. But when those necessary causal requirements are met, then we acquire the sort of rational and moral autonomy that make us free and responsible.
Why? To believe that pi is irrational means to believe that its decimal expansion is infinite and is not periodic. So that which caused me to have this belief also causes (indirectly, through the belief) my answer when I am asked what I believe about pi
That would be correct if we were always being passively caused to acquire our beliefs through the impact of brute external events. But this would be to deny that we have rational abilities to critically assess our beliefs and their sources in such a manner as to secure genuine knowledge. This is why my example was focused on knowledge rather than belief, since our rational ability to know is analogous to our ability to reasons practically and determine our ends.
When we have a rational ability to know, then the reasons why we come to endorse specific beliefs and repudiate others can liberate us from the past vagaries that caused us to acquire them in the first place. We can then submit them the rational criticism (which may be a quite trivial business, such as checking for commons sources of illusion, or ceasing to trust habitual liars, etc.) and what thereby comes to be the cause of our states of genuine knowledge becomes our own self-determined power to asses the justifications of our beliefs.