I've been a bit busy working on other projects and have not had the time to blog as much. I'm writing the script for a web series I plan on doing which should be good - god willing of course. Anyway, I found a quote from a person whose arguments I respect a lot on the incoherency of libertarian free will and I think he nails it in a very concise way. His name is Andy Schueler and he wrote this on Randal Rouser's blog a year ago*:
[L]ibertarian free-will is blatantly self-refuting and I'll add that it is so for any thinkable model of how causality works because it would always boil down to choices that are simultaneously caused (else they wouldn't be volitional - due to the agent´s will) and uncaused (else they wouldn't be "free" in a libertarian sense) - and something being "caused" while simultaneously being "uncaused" is a contradiction for any model of what "causality" is.
*I've fixed a few spelling/punctuation issues.