Can prayer change God's perfect plan?

[Brian37]

I think some people simply arent brasping how if all actions are already known, there is no free will.
They keep saying God just already knows what everyone will do, but we still freely chose it. I think they are really missing that if all variables can be known by God enough to determine the outcome, then that outcome is determined, not freely chosen.

Now if god saw a lot of branching possibilities but didnt know which outcome would happen, there could be freedome there, but no detailed master pla.
The 2 simply aren't compatible.

Not to mention the believer is still stick with "which one" because there have been 10s of thousands of creator God claims in our species history since the first written religions.