What is a tool schema — CCA-F Exam Prep

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REAL STORY A detective at a crime scene. On a table: a fingerprint kit, a UV light, and evidence bags. Each has a label with instructions. Next to them, an unlabeled mystery device with no instructions. The detective holds the mystery device, confused. Dark forensic scene, evidence markers on the floor.

A detective at a crime scene. On a table: a fingerprint kit, a UV light, and evidence bags. Each has a label with instructions. Next to them, an unlabeled mystery device with no instructions. The detective holds the mystery device, confused. Dark forensic scene, evidence markers on the floor.

A detective arrives at a crime scene. On the table: a fingerprint kit, a UV light, evidence bags. Each one labeled with clear instructions.

Then she picks up a fourth device. No label. No instructions. No description. She presses buttons. Waves it around. Nothing useful happens.