No pre-set plan, no parental supervision, just a “I’m going to go meet my friends on this summer day, I’ll be back before dinner.” For purposes of illustration,

No pre-set plan, no parental supervision, just a “I’m going to go meet my friends on this summer day, I’ll be back before dinner.” For purposes of illustration, assume these kids are aged 9-14, or thereabouts. Too young to drive, too old to be doted over every minute of the day. What are the odds they would all sit around together, outside, on their phones?