TED-Ed: The Train Heist | Think Like A Coder, Ep 4 | Alex Rosenthal

The video tutorial outlines a plan to steal an artifact called the node of power from a fortified train. The train's movement is controlled by a complex unloading procedure, and a robot named Hedge must press a button to lower a forcefield at the right moment. The solution involves programming a variable to track the train's position. The plan is executed successfully, and the artifact reveals a vision of the past, leading to the next mission.

Explain how the train's position is tracked using variables.

What happens when the artifact is finally retrieved?

What vision does the artifact show when it shimmers to life?