Mad and murderous or co-operative and alive? Tongan students’ story shows castaways can survive  by working together says Dutch author

What would happen if a group of poorly equipped, hungry, frightened and lost schoolboys washed up on a deserted tropical island? Would they manage to survive or would they revert to savagery? In 1954 British author William Goldman published his first novel, Lord of the Flies, which has become one of the classics of 20th…