The three positions on free Will that van Inwagen discusses in his paper all lead him to feel they include a mystery. Determinists say we have absolutely NO free Will ever, but van Inwagen says if there is no such thing as free Will than no human can be responsible for their actions. Compatibilists say we do have some free Will but it is determined by prior events in our life, events we can analyze and say “well if A is true , B must also be true” . But van Inwagen says how can we claim to have free Will when we know from our past there is a connection between A & B. The Libertarian believes our Will is free when a choice can be made that is not determined or necessitated by prior events. But again van Inwagen presents a mystery – how