Just as your personal computer has been preordained to run a calculator when that button is pushed, until it is pushed it isn't opertional. There are a number of things preordained for us, which if we rebel from Him and fail to return to Him we will aimply leave on the table as an eternal memorial of our foolishness.
But aren't all our button pushings, already known to God? And since He is the creator, didn't He create us, knowing what and when our button pushings will be...and the results and effects on others will be?