Decision Drive

Why did I just type this? Why did you just read that? Why did I end up writing a sentence about why I'm writing a sentence? Why do I ask so many questions? Why does action take place? Why does anyone make any certain decision? How does a theoretically intelligent, self-aware, existence-conscious being make choices?

Are choices made by conscious reasoning of logic, or subconscious impressions of past experiences?

Perhaps more likely, a combination of both, depending on the individuals genetic and adapted intellectual capabilities. Are there any additional variables, besides genetic intellect, past experiences influencing subconsciousness, and current circumstances? If not, theoretically, there could be a formula to calculate every decision, action and reaction of any person, with those 3 variables known.

Could super computers in the future, potentially link with the human brain, upload all previous data to calculate those 2 variables, from all past influencing experiences, and processing operations of a human brain? Once those 2 variables are known, the computer would just have to analyse the current circumstance variable -which itself, consists of many variables, but seems plausible for future computers to be capable of calculating. The computer could theoretically link with a human brain once, upload the data, then predict precisely the decisions of that person, in any circumstance.

If there is no more to a conscious decision, then even if someone was to intentionally attempt to spew off thousands of random (or what they might believe is random) numbers or letters or words, it could be predicted exactly as it occurs. There would be no defying the predictability.

If all actions of a conscious being are predictable down to a scientific calculation, does that mean we have no free will? If the particular electronic reaction within your brain is as calculated as a chemistry reaction of 1 element combined with another, then perhaps every action you ever take is predetermined, and there is no possible alternate outcome.
If there is no other possible outcome, is there a point to taking any intentional action? If you try to take an intentional action, that will be the predetermined outcome, if you don’t take that action, then that was actually the predetermined outcome. It seems like if 100% of the universe is predetermined, there is no point in taking any action, since no matter what you do, that was the outcome, and it is not possible to make any difference.

This is all sort of a baffling concept! But it seems to me that, if choices are meaningless, and intentional actions make no difference, then there would be literally no point or purpose to the universe. If there was no reason for the universe to exist, then it would not exist.
Therefore, by deductive reasoning, since the universe exists, it must not be 100% predetermined. If it’s not completely predetermined because there is potential for alternate occurrences, it seems likely –based on current potential observations and available data- that conscious decision is the means of potential alternate outcomes in the universe.
How can the brain create an incalculable scenario of varying potential outcomes?
That seems to be my next question.