If you live in LA, don’t have perfect vision, and don’t want to pay someone 5K to slice into your eyeballs, you actually need THREE pairs of glasses: one to wear when you take your contacts out, one for Sun, and ONE TO PUT IN YOUR EARTHQUAKE GO-BAG WITH THE SOLAR PHONE CHARGERS AND PACKETS OF DRIED FOOD SO THAT IF AND WHEN THE BIG ONE COMES, YOU ARE NOT THE PERSON STUMBLING AROUND IN AN OLD PAIR OF SWEATPANTS, ASKING FIRE HYDRANTS WHERE THE BATHROOM IS.