Free will is an illusion

I shall start by refuting my opponent's points followed by more of my arguments. "If you think you understand quantum mechanics, you don't understand quantum mechanics." - Richard Feynman. This quote comes from a well known, well respected physicists who had done considerable work in the area of quantum mechanics. Now I'm no physicist and I doubt my opponent is either but ill take Richard Feynman's word on the matter. However I shall still address the obvious flaws in my opponents opening argument and show how it infact supports my position. "These changes in the firing of neurons then result in changes in the decision made. No two people's choices will always be the same since they cannot have the exact same outcomes thanks to quantum mechanics." So from what I gather this only means no two people can be completely identical therefore they cannot make completely identical decisions, even if this is true I don't see how this is a point, as its obvious there is something different that makes them non identical and I don't see how this automatically means someone has free will, I think my opponent has made quite a leap to get from how neurons get fired to free will, ladies and gentlemen this argument is a 'non sequitur'. Also and this is where I feel my opponent only supports my argument as "randomness caused by quantum mechanics", now i'm not sure if my opponent read my opening argument but I clearly stated the first problem with free will is that we live in a world of 'cause and effect', every thing that could possibly constitute your will is either the product a long chain of prior causes and you're not responsible for them or it's the product of randomness and you're not responsible for that. Randomness being the key word here, so my entire opponents argument only supports my point as whilst quantum mechanics may refute the 'cause and effect aspect in this particular instance my opponents point it still rests on randomness which one has no control over, so at this moment I am only left to thank my opponent for giving me an additional argument. To your second point I am baffled how you came to the conclusion that "it is theoretically possible for there to be a non-physical influence on the physical word" as you gave no argument to show how this was possible or even likely all you said was "So how would something not physical impact something physical, it can't physically push it, move it, have an physical impact on it. But there is a possibility for this non-physical occurrence to control the probability of outcome. This isn't physically impacting the particle but it is changing the outcomes". My opponent entire argument is extremely weak and rests only on the premise that IF there was a non physical influence than maybe that could somehow (down a if I may say rather confusing and unsubstantiated argument) lead to free will. And what's more my opponent made no attempt to prove how the IF is true. Thus that which can be asserted without evidence can be dismissed without evidence. My original opening arguments could be seen as a more philosophical argument now I shall show through scientific arguments that free will does not exist. Neuroscientist Itzhak Fried implanted electrodes into the brains of participants in order to record the status of individual neurons " a procedure that gave him an incredibly precise sense of what was going on inside the brain as decisions were being made. His experiment showed that the neurons lit up with activity as much as 1.5 seconds before the participant made a conscious decision to press a button. And with about 700 milliseconds to go, Fried and his team could predict the timing of decisions with nearly 80% accuracy. In some scenarios, he had as much as 90% predictive accuracy. Now if free will was real how would it be possible to predict the actions of the test subject before they made them with as much as 90% accuracy it would be impossible. Another scientific example which refutes free will is a study by John-Dylan Haynes in 2008. After putting participants into an fMRI scanner, he told them to press a button with either their right or left index fingers at their leisure, but that they had to remember the letter that was showing on the screen at the precise moment they were committed to their movement. The results were shocking. Haynes's data showed that the BP ( or Bereitschaftspotential which is defined as "a measure of activity in the motor cortex and supplementary motor area of the brain leading up to voluntary muscle movement") occurred one entire second prior to conscious awareness " and at other times as much as ten seconds. (1) As you can see now through evidence free will is merely an illusion source: 1) http://io9.com...