Frozen is the story of two princesses, Anna and Elsa. Elsa has magical powers that she is forced to hide her entire life until her coronation ceremony. Elsa flees to the cold, remote mountains and sings “Let it Go” after finally accepting her magical powers and letting go of the pressure to hold back her true self. When she sings “the past is in the past”, it’s a reminder of the role of sunk costs in the decision-making process. Sunk costs should be ignored because that time/energy/money cannot be recovered in the present.
Thanks to Matt Rousu for the clip.