In To Kill A Mockingbird, by Harper Lee, Scout’s older brother, Jem, experiences a radical change upon reaching maturity at twelve years old. Besides becoming more mature, Jem develops a “maddening air of wisdom” (page 155) and an understanding for Maycomb’s ways which at first seemed bizarre to both him and Scout. This is clearly understandable, as the two were children and were primarily concerned with playing and Boo Radley. Before, Jem was similar to Scout. He knew little, and what he did know was not entirely correct. For example, when Scout asked Jem what entailment meant, he “described it as a condition of having your tail in a crack” (page 27). Atticus later had to tell Scout the correct definition of entailment as Jem’s definition