Carver noticed the other student walking in, and let him and Roy finish their introductions. He stood, swiveling off of the chair and placing it to the side. Straightening his tie again, something he wasn't used to wearing, and nodded.
"Okay, good to see we're all here for different reasons. A little about me, I grew up in Vale, but moved to Menagerie for a job. When that job ended, I worked as a police detective for a number of years." He wasn't trying to impress them, teens never get impressed by old people's accomplishments; he said it to establish their trust in his experience.
"What you might be asking yourselves," he continued as he addressed them, "is why we even have a class to teach detection skills. Most of you are here either to become better fighters, medics, engineers and hunters of Grimm. Not many of you will end up as investigators, but investigation and observation will enhance every facet of your chosen profession."
He addressed each of them individually, speaking as an older peer instead of holding his authority over them. Teaching was different from lecturing.
"Tokaru, being able to discern a patient's history can reveal additional information about them that can lead to a better diagnosis. Example," he gestured as he spoke, "I once worked a case where we had a victim attacked by an unknown assailant. Multiple lacerations, doctors couldn't seem to stop the bleeding. But, a keen eyed doctor could see the shard of glass that the perp had manipulated with his semblance, driving them deep into the victim. Saved her life."
Turning to Kat and Roy, he continued. "In combat, observation is step one. Whether identifying a key weakness in a Grimm, or a flaw in your opponent's attack pattern, being able to bring an extra level of perception to bear will give you the advantage. That often translates into a win."
Needing something tangible as an example, Carver thought about his time in the white fang, and a protest that turned violent. He'd stepped in to help defuse a chameleon faunus who had gone rogue, started taking potshots at humans. But they didn't need details, just an example of how Carver had dealt with him.
"Once, I fought a guy who could turn invisible. I was getting ripped apart from every angle, couldn't see him, couldn't hear him, couldn't smell him. But, just like you can't see the wind, you can see what it affects. Even an invisible foe leaves footprints, disturbs the dust, their guns leave gun-shot residue and their blades disturb air currents. He'd relied on people's distrust of their own senses to maintain his advantage, but he got sloppy. Trusted that nobody would be paying enough attention to notice the fine print. Ended up winning that one, barely."
Running a hand through his hair, Carver shrugged. "Most people you'll fight won't be invisible, but who knows? You could learn something useful. But you're here to participate, not to hear me yap. Grab a partner, and from appearance alone, I want you to come up with three observations about them. They'll tell you if you're right, then you switch."
"The point of the exercise isn't to get it right the first time necessarily," Carver pointed out, "just to get you in the habit of noticing fine details. More than just, 'that guy or girl is attractive or unattractive', which is where most people's conclusions stop. Once you're done, I'll go a little deeper, and then you'll practice on me. Pair up and get started!"
Taking a seat at the chair in front of the students, Carver wondered how keen their observation skills would be, and this would be a good exercise to get them in a good habit.