answer:Yeah. It always leaves me shocked at how much I rely on sight to even conceptualize things. I had a professor who was blind. The TA would walk arm and arm with him to class every day, and they would usually walk down my row (so we would make sure our bags were tucked underneath our desks.) He was such an engaging professor, and he was so precise with language, making abstract science concepts seem so tangible. I really enjoyed him. At some point I realized he had no notes with him—he isn’t the only professor I’ve had who works without notes (they know their stuff) but I did notice it more with him, probably more because of all the specific figures he knew off the top of his head. I remember once he couldn’t quite recall a figure, so he pulled out Siri and had her tell the class. Behind him, TA was taking notes on the chalkboard for everyone. The class was incredibly rude. Many thought since he couldn’t see, they somehow had the right to leave halfway through class (after roll, of course). And they’d slam their chair around as they got up, thud with each step, and the door would slam behind them. I was furious—why they thought that he somehow wouldn’t hear them simply because he couldn’t see them. Now as I think back, I realize they probably didn’t even care: if he couldn’t attach their sounds to a face, I guess they figured he couldn’t dock their attendence.