Is Predestination Compatible With Calvinism?

In some aspects of life that god would have no control, and that's where molanism is so important. If god knows prior to his decision to create a particular world, logically, prior everything that happen in that world freely. So i think you don't truly have a god who can pull off what the bible describes as predestination if calvinism is false or mental knowledge is false. Now i'm hanging n my hat with mental knowledge. Hurray.