His people were rapidly becoming a tribe of men, but they still needed Burl to think for them. What he could not think out, so far, could not be done. But a part of the proof that they needed Burl to think for them lay in the fact that they did not realize it. They gathered facts about their environment. The nearest ant-city was miles away. That meant that they would encounter its scouting foragers rather than working-parties. The ant-city would be a source of small prey--a notion that would have been inconceivable a little while ago. There were numerous giant cabbages in the valley and that meant there were big, defenseless slugs to spear whenever necessary. They saw praying-mantises--the adults were eighteen feet tall and as big as giraffes, but much less desirable neighbors--and knew that they would have to be avoided. But there were edible mushrooms on every hand. If one avoided spiders and praying-mantises and the meat-eating beetles; if one were safely hidden at night against the amorous male spiders who took time off from courtship to devour anything living that came their way; and if one lived at high-tension alertness, interpreting every sound as possible danger and every unknown thing as certain peril--then one could live quite comfortably in this valley. For three days the tribesmen felt that they had found a sort of paradise. Jon had his belly full to bursting all day long. Tet and Dik became skilled ant-hunters. Dor found a better spear and practiced thoughtfully with it. There were no red puffballs here. There was food. Burl's folk could imagine no greater happiness. Even old Tama scolded only rarely. They surely could not conceive of any place where a man might walk calmly about with no danger at all of being devoured. This was paradise! And it was a deplorable state of affairs. It is not good for human beings to feel secure and experience contentment. Men achieve only by their wants or through their fears. Back at their former foraging-ground, the tribe would never have emulated Burl with any passion so long as they could survive by traditional behavior. Before the menace of the red puffballs developed, he had brought them to the point of killing ants, with him present and ready to assist. They would have stayed at about that level. The red dust had forced their flight. During that flight they had achieved what was--compared to their former timidity--prodigies of valor. But now they arrived at paradise. There was food. They could survive here in the fashion of the good old days before they learned the courage of desperation. They did not need Burl to keep them alive or to feed them. They tended to disregard him. But they did not disperse. Social grouping is an instinct in human beings as it is in cattle or in schools of fish. Also, when Burl was available there was a sense of pleasant confidence. He had gotten them out of trouble before. If more trouble came, he would get them out of it again. But why look for trouble?