I think it is pretty obvious we live in a computer simulation program. With prizes at the end for those who fulfill the quest.
This is, statistically, the most likely. That we are a simulation.
Also, there are a lot of people in this thread who don’t know a damn thing about quantum physics.
Wait, you are still working on the quest?!?
You must have missed the warp zone in level 4-2 that takes you right to the final boss battle.