> Where do you find 10 kids together now
Walk to the park at the corner, have your child shout a few times, they’ll all pop their heads out of the door at the sound of others playing, desperate to do anything other than sit inside with their parents.
Yes, my mother walked me to one of those parks sometimes but it was a little pointless when I could play with my friends outside my home or my grandparents' home. The kids at the park were strangers. We played together but we did not create any relationship. It was like playing with the other kids while adults were busy inside the restaurant after a marriage. A fun afternoon but it ends there if you don't meet them regularly.
This working is a function of density. First, imagining a park at the corner is a huge assumption.
Second, if the park isn't within shouting distance of the necessary number of kids, half of the ones within shouting distance are at parent-scheduled activities, and half of the remainder aren't allowed to brave street crossings because of the six-foot-tall hoods and inattentive drivers of passing ChildMurker1050s, no amount of park yelling will be sufficient.