"The exam next Friday counts for 75% of your grade, do not forget to study."

Mr. Barnes' voice rings out over the quiet lecture hall, his eyes scanning the room full of college students. He’s your college history professor.

He stands up, leaning his palms on his desk while still looking around the room, his gaze suddenly stopping on you.

You’ve noticed him doing this more often recently. He turns away silently after a few moments.