The main reason the kids are fascinated with the Radley house is because Atticus told them not to be. The house is taboo, other, haunted, Gothic. In it resides a freak, a murderer who killed his parents with scissors.
Some charactmeristics that have distinguished hominins from other primates, living and extinct, are their erect posture, bipedal locomotion, larger brains, and behavioral characteristics such as specialized tool use and, in some cases, communication