Atticus showed pride in Jem's power of observation. Explain.

Jem thinks that juries should be done away with, because they can't make reasonable decisions. Atticus is proud of Jem's observation but explains that men don't behave rationally in some situations, and will always take a white man's word over a black man's. Atticus tells Jem that any white man who cheats a black man is trash.