A student sits at the front, palms slightly damp with nerves, eyes searching the instructor's face not just for instruction but for permission to inhabit meaning. The lesson is precise: a complex sentence structure, weighty with eye gaze, shoulder shifting, and role-shifting — features that live in the margins of spoken languages yet are the heartbeats of American Sign Language. The instructor signs the passage slowly, then again with the rhythmic certainty that comes from years of practice. Fingers carve the air. Eyebrows lift and fall like punctuation. The classroom leans in.