How is Piggy clever and persuasive throughout Lord of the Flies?

Ralph does not always respect Piggy's intelligence or his
loyalty to him, but Piggy always serves as a symbol of rational thinking and scientific
knowledge. It is Piggy who recognizes the value and power of the conch as a symbol of
unity and order. Piggy's glasses serves as the source for fire--both to cook the food
and keep the all-important signal fire going. Only Piggy is able to see the obvious
solution to the signal fire's close proximity to the beast; he simply suggests that they
move the new fire to the beach, far from the fearful beast. Piggy recognizes the need
for immediate shelter from the elements. He tries to persuade the boys to think and act
like the grown-ups, and that there are no ghosts or supernatural beasts. He suggests
using sticks to create a sundial so they can determine the time of the day. He points
out to Ralph that Jack's hatred for the leader is deep
and never-ending.