Yesterday I changed a light bulb. It was the overhead one at the entrance to our basement stairs. I had to use a stepping stool in order to reach it. That light bulb has burned out many times in the 20 years since I’ve lived in my house, but this was the first time I changed it, or even contemplated the task. It was one of the first times I’ve changed any light bulb. Someone else was always here to change the light bulbs. I never had to give them a second thought. Now I do. Changing light bulbs has become my ...