Isaac and I climbed to the top of Vulcan Peak in San Francisco, where I took a picture of "the view" only to be told that I had just photographed a solid piece of rock (sometimes Isaac had good reason to laugh). On our descent, Isaac spyed this tourist couple gawking, and explained that I was conducting an experiment. "Yeah, don't worry," I said, glad to be engaging with others as the task required. "I'm not actually blind." I waved, hopefully in the right direction, and snapped the shot. "Oh!" cried the wife, and I realized that I would never need to look this woman in the eye, ever. I knew everything about her, the terror and delight she felt at having her picture taken by a complete stranger, how her appearance worried her, what she would remember from this encounter and what she'd try to block out, all from her making that one sound, "Oh". I will never forget that. As Isaac and I treaded down, I heard the man say "Wow!", as clearly as if he was holding my other hand, helping me down. I wasn't sure what he found amazing, the view, or what he had just witnessed. I was very proud of the two of us, Isaac and I.