The opposite. The next thing you could ask is why does a Banana fits perfectly in our hand.

No, tell me, is this supposed to be an argument against Free Will? Why do you think so?

Just doing some google. I can't make a connection between sociology and that free will exists or not other than enforcing the illusion that it exists.

Anything else on this topic?

So you don't get it. Okay, I'll ask again. Do we have proof that the relation between each combination of chemical reactions and electrical stimuli leads to only one action, and that said action can be produced only by that combination?

Even easier: I'm asking for proof of bijectivity between cause and effect.

EDIT - Look at what you've done. It was way more fun with the bunnies, now it's... blargh. It's summer, for god's sake.

The point made was that people are in many ways determined, but that there is always an element of free wil.

It's the sociological standpoint. I might have been a bit arrogant in saying it's a fact. Scientifically there is still a debate of course. But for the sake of our functioning society, free will must be accepted.

Why would anyone in their right mind agree with this?

I've read most of the posts here, so it actually comes to this:

People who believe in Free Will have issues to understand the part of physics in this equation or ignore those completely. But what I miss most of the time is your lack of understanding your choice. If you can choose between 2 different things and go for one of them and argue you could also go for the second, than why didn't you in the first place? <- That's the main question in this debate. Why did you choose? When your answer is: I don't know, I felt like it, then you are ignorant of your own thoughts and are unable to provide any deeper insight of how you work. I would even go as far and tell you, that you don't understand yourself.

People who don't believe in Free Will like me, using methods like logical deduction, known laws of physics, knowledge of neuroscience, observation and skepticism (to some degree) in the equation. I for instance question every thought I make. Why do I think that way, what made me think that way. Where does these thoughts came from. And all I see is the trail and chain of previous thoughts and informations leading to the ones I currently have. Thus, I can see what previos thought made my choice.

Your consciousness is always the last one who receives information. Several parts of your brain, which you cannot alter at any given time, determine what your senses receive from the outside world. And according to those information, the brain will release specific Hormons and trigger specific behaviour depending on what it receives. Again, you (let's say as the consciousness) have mostly no influence to this. That's the subconsciousness. After that is done, you will be made aware of those things. Meaning, you also have a lag to reality, because of the processing time your brain needs. That's a fact. 

When we talk about triggers in the brain, laws of physics and causality. We go down to the neuron level, the part where electrons are traveling from one cell to the other one. The part which makes you think. What triggers thoughts. When we say that Free Will could break the laws of physics, then the following will happen at that level.

Causality should be a term everyone should understand by now. The simple cause and effect. The way everything physical works in this world. I would even go further, but let's stay a bit away from quantum mechanics, because it is unnecessary. If someone would possess the ability of Free Will. Meaning, acting differently in the same specific situation, it would look like this:

You have the option to choose between to different things. Your brain receives certain information through your senses for these 2 different things and makes you aware of it. Different thoughts will emerge in your consciousness making a debate of what to choose. You going through a list of pro's and con's to determine your choice. During your debate of thought more information perceive through your senses and going constantly into your thought process building an equation. At one point you become aware of the time which went by and decide to (another choice being made) ...due to your other tasks which have to be done (Chilling, working, having fun, whatsever) you have to come to a conclusion. All the thought processing is done and your choice should go to A. Well, you go for B and don't understand why. Something in your brain triggered on it's own without a cause which changed your decision and threw all your reason over board. You didn't wanted to go for B, but all of a sudden you did. That's what you would call Free Will. So, what the fuck happened? It seems some neurons triggered randomly which led you to choose one over the other by completely ignoring the causality of your brain and overwrote your thought process.
But, wait, something is not right. You didn't went with B. You went with C. But that didn't was a part of the debate. What the hell is going on? Nothing makes any sense anymore. Why did you stopped breathing? Are trying to kill yourself? For fucking sake, Neurons! Stop shooting randomly.

Later at the Hospital: Congratulations, you have Free Will. Nah, I'm kidding, that's tourette. Something is triggering your Neurons to shoot, and we can't figure out what it is.

OK, just to sum up this strange example. Free Will wouldn't wait for the choice to be made, it would be active all the time and randomly trigger thoughts and everything without ever being a cause for this. A neuron shooting is caused by another one doing the same and so on and so on and from the beginning your brain as been built.

Hope that helps... more or less.

. I don't see why there should be anything else to the human conciousness than chemical reactions and electrical signals because there's nothing suggesting that there's anything more to it.