It’s two days before the end of the year and Costco’s Optical section is mobbed. Like everyone else, I’m there to try to take advantage of my Vision plan coverage and Flex spending dollars before I lose them at the end of the year. I take a number and try to find a spot to wait while avoiding the onslaught of carts, the bored kids running and jumping between them and the crowds trying to browse the racks of eyeglasses.