In chapter six in Lord of the Flies what is the message sent to the boys that they do not get to read?

In chapter 6: Beast from Air the message that the boys fail to read is the arrival of the body of the parachutist. The body lands on the mountain top during the night, if it had occured during daylight the boys would have spotted it and went to investigate. The body would have reminded them that the universe did not stop at the boundaries of the island but that there was a whole world filled with civilised people beyond the bounds of the island. They might have been encouraged to continue their efforts to get rescued and this would have reinforced Ralph's authority. Instead when the message of the body was 'read' in the dim light of dawn by Samneric who misread it and thought it proof of the existence of the beast. When their sighting was recounted to the rest of the boys it added fuel to the superstitions which were running rife. The attentions of the boys were turned inwards on their own little universe, within the boundaries of the island. This undermined the importantance of Ralph's insistence in keeping the fire lit. The boys had little faith in any possible rescue by people from outside the island, when they had simply forgetten that the rest of the world even existed.