The other day I got scared. I was walking home at night, and as I turned a corner, the street lit up as if it had been daylight. A second later, it was already dark again, and suddenly I was dazzled again. The whole street was flashing on and off, because over the door of a pharmacy, they had just installed a flashing cross that shone like the Lighthouse of Alexandria. Was all that lighting necessary? It wasn't a dark street; it wasn't as if the pharmacy was any less visible at night than during the day. And I wasn't even on guard duty.