Living with Bob and "Al"

In Bob's first career he was in charge of remodeling stores for Montgomery Wards. He had to read blue prints, be able to conceptualize, and had a technical eye for things."Al" however was fascinated yesterday when he discovered he could see his reflection in the hollow of a silver teaspoon, and even more fascinated   when he turned the spoon around and his reflection was distorted. "Wow, you have got to see this." "Al" announced, I never knew this before, I wonder why it does that?"
(Heavy sigh)