According to a study from a firm that puts ads on your phone’s lock screen, the average cell phone user unlocks their phone about 110 times per day.

+ I’m not sure about that number. Most people I know don’t spend enough time off their phone for it to enter lock screen mode that often. How heads-down are we? Consider the case of a a man who pulled out a pistol on Muni in San Francisco. For some time, almost no one noticed. (Take a quick glance around right now. If all is clear, move on to the next story in this section.)

+ Aeon’s Tom Chatfield on the price we pay for all that clicking. (Ironically, Chatfield would make a great name for a new app.)

+ Ahmad Zaghal constantly takes pictures while he’s at concerts. Ahmad Zagha is blind.