If I plan a destination - lets say, to take my family to the city, to the zoo; I have predestined for my family to go to the zoo. But if on the way to the zoo, I turn off the path and end up lost, it was my choice if I miss my destination...
It is Gods will that non should parish, but ALL have eternal life.... that is what we are all predestined for - but if we take a different path, and get lost - it is our choice, not Gods.
BTW: If I'm not wrong, the Calvinists also believe that some are predestined to go to hell -- that is clearly wrong.
That's not the question here.
The question is that you look into the future and you see that you are going to be in the zoo with your family.
You then go ahead and plan a trip to the zoo.
On the way to the zoo, you decide however that you are going somewhere else.
a) If you are not going to the zoo, then the future you saw before was false
b) If you saw that you were going to the zoo, and then plan to go there based on what you saw, then that is no longer pre-destination.
But it is in a sense a foreknowing. And with that you are beginning, maybe, to see the difference between foreknowing and predistinating.