In Chapter 1, Golding introduces the novel's major characters as well as its theme: that evil, as a destructive force in man, society, and civilization, is present in us all. To illustrate this theme, Golding uses several major motifs: civilization versus savagery; humanity versus animality; technology versus nature; hunters versus gatherers; men versus women; adults versus children; and the intellect versus physicality. As the characters interact with each other and with their environment, so do the forces they represent. Using the characters to embody these forces allows Golding the opportunity to compare and contrast with rich shadings of meaning rather than with simplistic oppositions.
The novel opens with a description of the "long scar smashed into the jungle," a reference to the snake-like damage done by the plane as it crashed into the island. Here civilization with its technology has dealt a blow to nature; nature counters by sweeping the wreckage out to sea. Yet the conflict is not so simple. While the jungle may represent nature, the beach provides the conch and the platform, both of which symbolize institutionalized order and politics (civilization).
True to the dynamics of democratic politics, Ralph is elected leader for superficial reasons. He is a personable and handsome boy who appears to be in charge because of his use of the conch, which functions for him at the moment of his election (and throughout the novel) as the symbol of authority. Although it was Piggy's quick thinking to use the conch to summon the others, hampered by asthma, he must allow Ralph to do the summoning.
And while Jack clearly has some experience in exerting control over others, making his choirboys march to the assembly through the tropical heat in floor-length black cloaks, the sheer arrogance of his open grab for power probably puts off some of the boys, raised as they have been in a society that values politeness and decorum. Therefore, the boys choose Ralph for his charisma and possession of the compelling conch over Piggy, who lacks the physical stature or charsima of a leader despite his intelligence, and Jack, who is " without silliness" and possesses a less civil manner.
Naturally Jack has a strong and vocal aversion to Piggy, who represents thorough domestication in contrast to the savagery lying just beneath Jack's surface. Piggy is no fan of Jack's, being "intimidated by [Jack's] uniformed superiority and the offhand authority in [his] voice." With his poor eyesight, weight problem, and asthma, Piggy is a boy who could survive only in a civilization that offers the dual protection of medical treatment and cultural affluence — a society wealthy enough to provide food, shelter, and purpose for its physically weaker members. In England, Piggy would be valued ultimately for the contribution of his intelligence, despite his lack of physical ability or social skills. On this uninhabited island, however, Piggy is the most vulnerable of all the boys, despite his greater mental capabilities.