what details does the author include regarding tim in chapter 11? Why are these details important

Tim clearly realizes for the first time that his brother can be wrong. Not only is he putting his quest for glory and his promises to his friends above his family, but he believes he is completely right to do so and is annoyed with his family for bothering him. Tim is still glad to see Sam and is proud to show what an adult he has become. It still seems unfair to him that Sam does not have to carry these burdens. Tim has always looked up to Sam as a roll model and wanted to be like Sam, but now he knows that he cannot always be proud of his brother. When Tim recognizes that they are now equals, he puts away that last part of his childhood, the idea that his older brother will look out for him and protect him.