I’ve developed a good habit: when I’m on my phone, I always stop and stand, and I’ve firmly given up the bad habit of walking and looking. This change came from a big wake-up call. I tripped over an iron screw on the road, fell on all fours, and the phone flew out several meters away, which was quite a mess. Luckily, there was no one around at the time, which prevented the situation from becoming a bigger deal. I was lucky that I didn’t bring my camera that day, or it would have been a disaster. I was also lucky that there were no street photographers around, or it would have become another “accidental scenery” photo. It turns out that those missing warning stakes of the barricade screws are hidden in the daily invisible traps, always reminding us to walk when we need to be more vigilant.