Final answer:
Ralph and Piggy journey to Jack's fort to maintain order and retrieve Piggy's glasses, symbolizing knowledge and insight in 'Lord of the Flies'.
Step-by-step explanation:
Ralph and Piggy decide to go to Jack's fort in Lord of the Flies because they feel it is necessary to maintain some semblance of order and retrieve Piggy's stolen glasses.
Ralph represents the symbol of order and democracy, and without Piggy's glasses, he cannot maintain this order as the glasses represent the power of knowledge and insight.
The boys' journey to the fort is crucial as it highlights the ongoing conflict between civilization and savagery within the novel.