What are some flaws of doon harrow from city of ember?

Some flaws of Doon Harrow from "City of Ember" include his impulsiveness, which can lead him to make hasty decisions without fully considering the consequences. He can also be overly confident in his own abilities, sometimes underestimating the challenges he faces. Additionally, Doon's strong sense of justice and desire to fix things can sometimes blind him to alternative perspectives or solutions.