We perceive our free will as a fundamental inalienable artifact of human existence, and yet science has a very different idea.

The Laplace demon

Being a Natural Science university student, I often find myself thinking about free will.
I would like to start with an anecdote about the Laplace Demon, which is a hypothetical creature conjured by Pierre-Simon Laplace, the famous French scholar of natural science.
The Laplace Demon has a very special skill set:

• It knows the precise location and momentum, In every moment, of every atom in the known universe.
• It is an absolute expert in the laws of Newtonian mechanics, and can calculate any physical equation with infinite processing power.

Given it’s abilities, the Laplace demon can unambiguously determine the future state of everything in existence.

What does that have to do with free will?

Our brain is a vast ultra-complex neural network of electro-biochemical interactions, which adheres to the same set of natural laws as everything else, and is made down to its most basic elements out of the same atoms as everything else.
We are all effectively star dust, paraphrasing the famous physicist Lawrence Krauss – stars had to die so we can live.
Here is where things get interesting - If we were to think about all of this as true (as we probably should), it would mean that our little demon friend can predict every decision we ever make, before we make it.
How does that fit with freedom of the will? well, it doesn’t.

Looking for freedom

If we were to look for free will, where would we begin?
Would we be looking for a ‘free will’ module in the brain, governed by an external natural force presently unknown? but that would be looking for something superfluous, as the present forces of nature are enough to give us a good working model of neural activity, and we already know the sum total of causal influences on our brain cells at any given moment.
What it comes down to, is that free will seems to have no existence outside our subjective perception of reality, which as we all know can be quite misleading.

The biggest threat to the notion off free will, is probably the idea of determinism, as we know it from Newtonian mechanics.
Will quantum mechanics be able to help?
In quantum mechanics, the best we can do is calculate probabilities of events, but nothing more.
According to quantum mechanics, uncertainty is a basic feature of the inner workings of nature.
This doesn’t really solve anything, as we are left with at least the same lack of personal control, and we still find no room for free will.

Benjamin Libet’s experiment

Benjamin Libet was a famous cognitive and neuroscientist, who conducted a set of interesting experiments.
He connected subjects to an Electroencephalograph (EEG), which records electrical activity in the brain via electrodes connected to the scalp.
After doing so, subjects were requested to preform spontaneous basic actions, like moving a hand or pressing a button, and report the exact time when they have made the conscious decision to do so.
When Libet recorded the signals, he concluded that the brain activity behind the actions, has actually occurred before the time reported for making the decision to act.
It looks like our brain is making the decision for us, and only than let’s us in on it, making the process seem automatic and out of our control.
Although this experiment does not necessarily negate free will on its own, it does offer an interesting perspective into some relevant underlying processes.

The question of free will remains unanswered.
The scientific community is inclined towards it being illusory, and yet it is possible to find world renowned scientist who still say we simply do not know enough to form a valid conclusion.

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Much obliged.