By using the rather than a script, Alex finished his work in 20 minutes. The next day, when the teacher called him to the board for a surprise quiz, he wasn't nervous. While other students had copied the answers without thinking, Alex actually understood the "why" behind them.

He checked the GDZ. He was right about the iron ore but forgot about the environmental impact.

Alex opened the GDZ on his phone, but instead of writing everything down immediately, he played a game: