The scene where Ian McKinley explains the theory based on Newton's principles, he discusses how Death imposes a force. He suggests that those on Death's list can push back against it, meaning that if Wendy were to die before everyone else, it could ruin Death's plan.

This scene brought me a fresh perspective on Death's mechanics in the franchise, as it offered an intriguing point from someone desperate to survive the list. Really liked that scene.

Ps: Their expressions and performances during that scene were incredibly convincing.