Based on the context and the answer, generate a question. 

Context: As the youngest of four siblings , I endured my share of torture . We ' ve all grown up to be a loving foursome , but my brother Kurt ( 5 years my senior ) was particulary evil ( in a teasing way ) when I was young . Let me share with you the story of an older brother and his childhood antics .

Answer:

Children tend to act mostly on instinct and have not when learned about consequences



Why did Kurt behave in an evil way when the speaker and their siblings were young ?