This video is about Newcomb's Paradox. In this problem there is a predictor and an agent (you) and two boxes.
One box always has $1000 and is open and visible. The second box is determined by the predictor before you even enter the room. The predictor has past data on others and is really good at predicting.
If the predictor predicted you would take two boxes it puts $0 in the second box.
If the predictor predicted you would take only the second box, it puts $1,000,000 in the second box.
Which option should you choose?
https://www.youtube.com/watch?v=Ol18JoeXlVI
You should watch the video to see how the rational actor changes his mind. However, why it is posted here is because one of the conclusions that is drawn but one of the philosophers is that the moral of the paradox is that "being rational isn't deciding what is right in the moment but deciding what rules you are going to live by". Theologically, we have the idea that God doesn't just decide what is right/best/good from moment to moment but as stated in D&C 130 20-21: There is a law, irrevocably decreed in heaven before the foundations of this world, upon which all blessings are predicated—and when we obtain any blessing from God, it is by obedience to that law upon which it is predicated.
There are many who can object to the notion of God because of the reality of evil in the world. This paradox shows rationally why God has set up the situation He has set up.