1. While my new Cateye light is bright, it doesn't let you see every sharp metal object in the road.
2. Said sharp metal object can cause rapid decompression of a bike tire.
3. It's always good to carry a spare tube.
4. When no tube is available, I can walk at a steady pace of 3 mph while pushing my bike.
5. I can ride a bike with a flat rear tire at a steady 10 miles an hour.
6. It's better to be 5 miles from home with a flat than 20.
