Here is the deal, ChristAlone: The logic is that if a so-called "free will" decision even COULD be known in advance of the person making the decision, then it is manifestly not a free choice at all - there was really no choice involved.
Instead of the apple in Eden - how about this: If the outcome of the Superbowl of 2013 could be known for certain now (in 2012) by god, by us, by ANYBODY - then is the superbowl of 2013 going to be a free and fair game? One really decided on the field?
This is what makes the Witness notion that their god COULD have known Adam & Eve would sin, but caused himself somehow to NOT look into the matter ahead of time - so ridiculous. It mandates that god created them without the power to NOT sin, and still punished them for it.