What is the importance of chapter 3

Once again, every visible action in this chapter takes place in the bunk house as characters make their exits and entrances. Steinbeck carefully controls the events, weaving even the smallest detail into a rich whole. The atmosphere remains gloomy as the action progresses from the account of Lennie and George's near-lynching, to the shooting of Candy's dog, to the fight between Curley and Lennie - with one exceptional spot of light, George's monologue "about the rabbits" and Candy's offer to finance their dream.