The fact that in any given moment I can decide to type "rat" or "acorn" or whatnot seems to be proof enough for me.
Now some of you may say: "ah but don't you see? Thats the facade, its your biochemistry doing XYZ."
If I 'believe' I have the ability to enact my fate, and the result happens, it might as well be free-will for all intents and purposes.
Also consciousness is not a chemical reaction.
That is a logical response from you because you are thinking about free will, and naturally you want to believe you have free will and thus you think about the fact that you can think about rats and acorns, but that is only because that is what you thought of because you thought of free will. Which as you can see is your brain doing A because it was faced with B in the setting of C with a past of D.
As I've mentioned earlier. Free will is an illusion that allows us to "choose" a better destiny, an attitude that regards free will as obsolete will just not give a fuck because "it was all meant to be this way anyways". Basically the whole discussion around free will is unecessary since we should act as if it exists anyways, but it's too interesting to let go.
Haven't ever pondered about consciousness, but I would assume that is just our brain confirming for itself that it is actually living and doing things.
Consciousness exists grounded within reality but is on its own plane. It most certainly is not simply a chemical reaction because that would mean to imply that if one could replicate these experiments in a closed environment they would be able to create a conscious being.
The fact of the matter is that there is not even close to being enough scientific data to do more than assert that actions are little more than just electrons firing off in other directions.
And if actions and emotions were nothing more than brain states, then it would logically make sense that brain states would necessarily follow actions. If this was true, then everyone diagnosed with depression but not treated would either attempt suicide, or no one would.
You wouldn't just have to replicate experiments in a closed environment. You would need a human being being born by the same person at the same time at the same place in the same environment with the same people around it and with the same childhood. And I'm not talking about similar kind of people here, everything has to be completely identical down to a scale of impossible measurements, at least for now (and probably forever).
But there is currently no reason to think otherwise, and like johnnymo said, there is really nothing else that doesn't follow that pattern. I think it's quite odd and stupid that people place human beings above everything else, although most of them even admit we've just evolved from apes (as far as we currently theorize and believe).
No, because everyone has a completely different past and current. Their life situations are completely fucking different causing completely fucking different responses and actions towards their depression. A depressed porn star and a depressed cashier will have very different life situations causing very different reactions towards it, because there are billion other factors to account for. The easiest place to start with is the childhood and their genes.
I suppose the trite and inevitable question is why bother, then?
Because if you don't everything will go to hell.
Why bother with anything?
If we're set on rails of determinism why bother with notions of freedom?
Previously covered this in this post. But take this other quote from one of my earlier posts on page 3 as well:
Free will is something that doesn't exist but should be treated as if it does. You chose your own set destiny. If you go with the attitude that "everything happens for a reason so I just won't give a fuck" you "chose" to make bad decisions. Free will is an important illusion that makes your destiny better.
People ponder about the meaning of their life all the time and the only actual conclusion they have ever come to is that there is no reason, so they'll just have to live to live to be happy and get kids that can bring the generations coming. Life is pointless, but why give a fuck? You live and your very existence is so impossible to explain you should just be thankful enough that you do exist.