In the show, the actress (playing herself, it would seem) declared that she knew people by their touch, by their hands. Because she no longer had use of her hearing or seeing. She could only know someone this way.
I wondered though, if I lost both my sight and hearing, mightn’t I also know someone by their smell, by their vibration? Mightn’t I sense my mother’s approach even if I could not see or hear her?
But perhaps I overestimate the other senses. Perhaps the darkness and silence is so total, there would be no feeling someone behind you. Maybe those feelings are micro-hearing or seeing sensations. Maybe when I close my eyes in an acting exercise and sense the movement around me, joining it without seeing it, I’m really hearing it, quietly, without knowing that’s what I’m doing.
The kinesthetic sense, the proprioception that feels like it leads to some understanding of the other, to knowing someone else, may be the sum total of the other senses.