> seeing where someone is reading [...] doesn't correspond to any physical experience I don't know if I agree with that. You can follow someone's gaze fairly

> seeing where someone is reading [...] doesn't correspond to any physical experience I don't know if I agree with that. You can follow someone's gaze fairly easily. At a train stop, you can see if they're reading the map, watching birds or what have you. You can tell if someone is looking at something that interests you as well.