In this chapter William Golding is definitely using characterization to really start defining the boys, namely Jack. With Jack's hesitation allowing the pig to get away, we start to see that he's just like the rest of the boys, confused and scared. This is like a sign of 'civilization'; You don't hunt for your food in normal british society, you don't kill things. But you really start to see Jack break out of this mode when he slams the knife into the tree trunk rather violently, assuring there wouldn't be a next time. This alludes that the next chance he get's he's going to kill whatever creature comes in his way next, breaking out of the 'civil boy' mode and reverting to his more instinctual human nature. This is also foreshadowing to the demise of certain characters in the novel, which would ultimately change Jack's view on people and things forever.
