That reminds me of some story (not a true story) about a donkey that found itself equidistant from two water troughs, equal in all respects, and stood there, unable to make a choice, until it died. So-and-so's donkey, it's called IIRC. If this ever actually happened, I'd be amazed.
The fact that people are faced with decisions to which they do not have an immediate solution casts doubt on the mechanistic, reductionist view. There is a definite decision-making process. I go through the process on a regular basis. And it is this process which must be examined before concluding whether or not people actually determine their future.
In my view, the subjective aspect of this process *is* freewill. Whether or not the outcome of the process is predetermined doesn't change the general way the process works. Nor does it obliterate the process. Freewill remains as long as it is used.
That said, knowledge of how the process works can have a specific effect, as follows. A person who believes their future is already determined may decide there's no point in taking the time and effort to make careful decisions and so may live willy-nilly. (I like that word

)They may resent being held responsible for their actions. Someone else may feel an extreme amount of pressure in making decisons, believing they are wholly and soley responsible. They may feel pride or guilt over a decison. And so on.
Some decisions are mostly random, like which pair of socks to pull from the drawer. Some others depend mostly on moods, like what music you feel like listening to tonight. Because of their highly subjective aspect, they present a hairy problem to an objective observer, and it is very difficult to lay out a decision-making process for these two types. This problem has yet to be fully resolved.
But in cases where the decison depends almost exclusively on reason, the process can be easily communicated. And these decisions are usually predetermined, in the following way. Given a problem and set of options, there is a *best* option. The best option is determined as soon as the problem is fully set down. And, in this case, the decison-making process is really just discovery; figuring out which option is the best. For example, deciding on which college to attend.
However, the setting down of the problem includes determining a goal. The goal is what allows the ordering or prioritizing of the options. The goal (or goals) determines the worst, best, and every option in between. In the case of college, cost, location, instructor quality, and social life will assume a certain priority or value and become a set of goals. Granted, there can be restrictions on what kind of goals can be set; money and time are common restrictions. But that is only a part of the process.
For this type of decision to be taken as predetermined, the setting of goals and assigning of values must be shown to be predetermined. That is no simple task, and it has yet to be accomplished.
So anyone who says people's decisions are predetermined either has a big secret or a lot of gall.
Happy thoughts
Rachel