He's probably the smartest boy on the island, but lacks any social skills whatsoever. Piggy dies after Jack takes his glasses, which he can't see without them, and falls into a big hole. .
Simon: The youngest out of the three boys above. He is very good and pure, and has the most positive outlook. When the plane crashed on the island, he immediately bonds with the nature around him, he doesn't have any problems to adjust the island he's trapped in. He's a loner and likes to travel in the island by himself, but when help is needed, he'll be there. He meets up with a pig's head skewered on a stick, which becomes known as the Lord of the Flies. Simon is killed soon afterward by all of the other boys who were caught up in a savage dance. He believes the monster that everyone believes is on the island is actually inside of them, that there's not a real monster out there, his philosophy about human kind and life is smart but the other children don't listen to him.
The story takes place on a deserted island and happening in the time of world war II.
The Main Problem: I think the main problem in the story is the surviving. Ralph, Simon and Piggy have to deal with Jack and all the children that followed his animal ways. Jack's dictatorship threatens Ralph's democracy and vice versa. There are many differences between the children and their points of view, it's hard and even deadly for them to try and get along with each other. .
Also, in the book, Golding shows that the lust for power and reign will destroy even the most innocent and pure society, that's why he chose to use children in the story. The book presents reasons for a society destruction, all of those reasons like democracy is not strong enough or the addiction to luxuries that are not needed for basic existence, creates the main problem in the story. .
The Turning Point: The major turning point in the book is Simon's death. His death completes the transformation the children went through as the book progressed from being civilized and human to being basically animals and wild.