What was Mr. White’s third wish, and why does Jacobs leave it to the reader to figure it out?

White's third and last wish, but the reader can easily imagine what the old man wished for. He wished for the knocking to stop and for the knocker to go away forever.

Explanation:

one reason summer auggie is because she is kind, and the whole "boy war" between jack will and julian was probaly thinking her to be on auggies sode and if you read auggie and me,   she was nice to auggie because julian was mean and auggie needed some freinds. hope this

impartial means: treating all rivals or disputants equally; fair and just.

i would say that impartial is agreeing with something, because impartial means to treat your rivals, arguments, and reasoning equally and fair. so if you rival says something, agreeing on it means you did the impartial.