in this section, I found myself not understanding why those libraries were added. Scanner was used before in the book but also no mention to what it means. Screenshot: <img width="886" height="956" alt="Image" src="https://github.com/user-attachments/assets/4b22f229-830f-4e85-862e-742d4dc60e08" /> <img width="919" height="999" alt="Image" src="https://github.com/user-attachments/assets/4bea1a39-f15e-465d-aa96-301f64fbafdc" />
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