Allow me to re-state.
“What are your views on whether humans decisions are rational and therefore deterministic in nature, or non-rational and therefore may be non-deterministic?”
Decisions cannot be both rational (the result of a sequence of logical outcomes) and non-deterministic (not a consequence of of a sequence of antecendent outcomes). Since this would be contradictory.
You are doing the same thing everyone does who rejects free will. You are presenting a false dichotomy of extremes, that decisions must either be forcibly determined by preceding events or have no causal relationship whatsoever with preceding events. Neither of those is true. Quite possibly the source of this confusion is your mistaken belief that “to cause a thing” means “to forcibly determine a thing”. There is a huge difference between influencing something and forcibly determining it. Parents, for example, know this through experience. They can influence the behavior of their children, but they cannot determine it.
Causality has frequently been misused by those who do not understand what it really means. Aristotle was one of if not the first person we know who used the word cause in his philosophical writings. He defined four different causes that are all present together: material cause, formal cause, efficient cause, and final cause. In the past few centuries, many people who like to consider themselves philosophers or intellectuals have talked about and used Aristotilean causality in their ideas without understanding that all four causes are implicit in everything Aristotle wrote about causality.
As St. Thomas Aquinas famously said, “An error in the beginning is an error indeed”. Make an error at the level of a basic principle such as causality, and everything built on the foundation of that principle will carry with it the same error. You are making such an error.
The word cause today is usually used in only one of the four senses it was used by Aristotle (and St. Thomas, and anyone else who used Aristotilean language prior to the past few centuries). That is the efficient cause. An efficient cause is that which brings about or halts change.
For example, consider a table. The material cause of the table is the matter out of which it is comprised. The formal cause of the table is the way in which the matter is arranged (ie, its form). The efficient cause of the table is the acting subject (ie, the carpenter) who constructs the table. The final cause of the table is the purpose the acting subject has in mind (ie, a surface on which things such as dinner or homework or floral arrangements may be placed). The emphasis of modern philosophers seems to be on the efficient cause, with the other three causes almost always never mentioned or dismissed as irrelevant.
But a key component of the concept of cause is the final cause, the purpose. Purpose means there is a design. Design means there is a designer. Everything Aristotle writes about cause and effect includes within it the principle of free will, of actions chosen rather than fixed by what has come before. You can’t simply rip the final cause out of the picture, replace it with random chance or some undefined “laws of human behavior” in order to claim that causes don’t involve free will, and go about your business assuming that the whole framework will retain its coherence.
The very definition of causality contains within it the concept of an active will desiring a specific end. You have to rework everything that relies upon that foundational principle if you want it to remain coherent. Using the concept of cause and effect as presented by Aristotle only minus the concept of free will, is as nonsensical as using the concept of computer programming only minus the concept of source code.
If you want to treat causality as a system of forced determination with humans as nothing more than biological machines, then some sort of explanation is in order. If you have a philosophical explanation, it should be at least as long and thorough as Aristotle’s treatment of the subject in both Physics and Metaphysics. If you have a purely scientific explanation, then present that instead. I expect purely scientific evidence from a purely scientific explanation. Experiments in which multiple subjects comprising an accurate cross-section of humanity always choose a correctly predicted outcome in a variety of different scenarios should suffice.
If you cannot present either of these things, then what you’re offering is nothing more than your personal testimony to your personal belief. As a man of faith, I’m willing to accept such testimony as evidence. But first you’d have to present some sort of credentials explaining why you’re an authority on the subject, as well as an explanation of what the object of your faith is. Being a man of faith does not make me a man of blind faith.
Interesting point of view, there’s a lot of research ongoing at the moment into why we make the decisions we do. it’s an interesting area of work. But I’ve yet to find any evidence that humans “choose” what to believe. I’d be interested if you know of any?
Also please note that the above is not evidence for human decisions being rational. given the above they could just as easily be selected by chance on a probability curve and subsequently justified. Either option neatly matches the observed effect.
I have yet to find any evidence that humans do NOT make free choices.