At age five, Vlad Tenev walked home from school alone and was expected to go to a neighbor's home for supervision.

“So it was kind of like, you know, when I was in kindergarten, five years old, they would... I would walk back from school by myself.”

“Uh, they would tell me, "Okay, go to the neighbor's house." We lived in apartment buildings at the University of Maryland. "Knock on, knock on the door. Your neighbor will watch you for, you know, a couple of hours."”