Uhhh, that was a dodge.
Yes, I can give you about a 99% certainty under those circumstances what would happen. I don't have to be omniscient, and even if I was, it wouldn't change a thing (which is after all the point).
You are saying the path cannot be altered or God isn't omniscient. Agreed. Where you always lose it is taking that point and equating it with God made it happen.
Yes, God knew there'd be original sin.
Yes, God knew there'd be the Law, and it would get screwed up by man.
Yes, God knew there'd be war.
Yes, God knew there'd be suffering.
Yes, God knew He'd send His Son to be sacrificed.
Other than Jesus (who in reality is the earthly manifistation of God), no individual's path is set by anyone other than themselves. This is why we are ultimately accountable.
It's like this... free will means just that. It means some will not go the way God wants them to. It doesn't mean God made them take that path. People choose to be apart from God, not the other way around. And if you really want to get right down to it, hell is being separated from God. So you see... people choose to go to hell.