Could you say what you think Sam Harris' argument is? Asserting that we are puppets or that our attempts to control our thoughts are just illusions are both just ways of re-asserting the conclusion he is trying to defend or ways of asserting implications of that conclusion (in other words, it's just begging the question). What do you take his argument to be for the conclusion that we are not free or that determinism makes us not free?

I'm specifically wondering if he has any more than just an intuition that being caused to do something is being unfree, more than an uncritical, uninterrogated sense that this is just obvious.