This idea is just as dumb/stupid as it ever was. Anyone who actually believes that which shirt he chose to wear today was somehow already determined for him before the beginning of time (or whatever remote date you want to use) is suffering from a grand mental delusion. :shrug:
Not from the beginning of time, since there is real randomness in nature (at the quantum level). Still, the reason I wore a red shirt today is, in part, because I wore a blue one yesterday and there is some program in my brain that resists wearing clothes that are too similar from day to day.
The question of free will is not at all stupid because the neuroscience has for several decades been chipping away at the notion that we can spontaneously generate a thought independently from the state of the brain, and that we cannot spontaneously change the state of the brain. There is nothing conclusively demonstrating that free will does not exist, but the more we study the brain, the more it seems to be as mechanistic as any other organ. (There are studies that show that our brain often sets course of action before the relevant signals are processed by the profrontal cortex...yet people report those actions as feeling like they resulted froma free choice as well. So in cases where we feel as though we "chose" an action, no rational deliberation was done until afterwards—unless the control of the executive function is not as dependent on the prefrontal cortex as we believe.)
It could even be that my decision to wear that red shirt was influenced by true randomness that arose while I was considering what to wear. It could be, for example, that somewhere in the synapses quantum mechanical randomness does creep in and that small change in initial conditions leads to a different selection. Even in that case, and even assuming that events prior to this morning had *no* influence on my decision, I still did not control the decision...it was literally the result of a random fluctuation which I had no control over (except the illusion of control).
It does feel like I have free will, but either free will resides in the brain, or it resides somewhere else. Since there is no evidence of a "somewhere else" from which it could come, we expect the brain to be the physical source of free will. So far, though, the more we learn about the brain, the less we see any home for free will in it.
I like to believe that we will solve the problem and figure out a way to explain free will existing, but neither side has a slam dunk argument yet.