I wish I could help you but sorry
Mary Brown's dog symbolizes the child in a way the police can get away with the killing even if the child or citizens are innocent.
The police showing no remorse about killing an innocent life of the dog/child demonstrates the corruption of the environment there.
Answer:
bad thing: u compare your self to other people, bad mental health, etc
Explanation:
good thing: u may actually learn interesting stuff, keep up with friends plus family, know when major events may occur