Manipulation, Free Will, and God's foreknowledge
If God knows the future and uses this knowledge in his actions then we are not free.
Many people believe that God has complete knowledge of the future and hence knows what we were going to do in any given situation. They believe that God uses this knowledge of how we will act to set up the world how he wishes it to be. This is a widespread view, not merely Calvinists, but virtually everyone who denies the Open View of God's foreknowledge would hold such a view. I suggest this amounts to God manipulating us for his own ends, and as such, is inconsistent with free will.
Defence of said thesis:
Premise 1. The above stated view of God effectively says that God manipulates us.
("Manipulate" = control to one's advantage by artful or indirect means)
Allegedly, God uses his sure and certain knowledge of how we would act in different situations in order to create the "best possible world", by putting us in situations such that the outcome is as he wants it. It appears to me that this view portrays God as manipulating us.
Premise 2. Manipulation to the degree depicted above is inconsistent with free will.
("Free Will" = The power of making free choices that are unconstrained by external circumstances or by an agency such as fate or divine will.)
It appears to me fairly obvious that if someone else is manipulating us in order that we act according to their desires, we are not really free. Now I think there are definitely degrees of manipulation: eg I could try and make someone who I liked to like me back by being extra-nice to them or giving them presents. This sort of low-level human manipulation doesn't really override free will because it's far from certain that we will actually succeed. But when God does it, it is alleged, he has sure and certain knowledge of exactly how people will act in different situations he might put them in.
Conclusion. The belief that God uses his foreknowledge of how we will certainly act in different situations is effectively saying that God manipulates us, which is inconsistent with free will.
In short, to preserve free will one must hold the open view.