"Whenever he hunts or travels he does not permit himself to become completely distracted by one activity, but is constantly on the watch for any change in his surroundings. Thus, no matter how intent he may be on stalking a seal lying on the ice, he still glances around the area in case a polar bear might be near, and he watches the surrounding ice lest it should begin to move and carry him away from the landfast ice. When crews of men are engaged in butchering a walrus on an ice pan, they frequently look up and flash their eyes over the surrounding water in case a seal should surface nearby. And should they see one, they move with amazing speed to grab their rifles and shoot, knowing that the first chance is always best and often there is no second chance. Their secret is to avoid becoming too engrossed in what they are doing. One who hunts with them will find that he is too slow and deliberate, and hence will rarely get off a shot before the Eskimos do. Finally, some of the alertness and quickness is acquired, and it is a considerable advantage in getting along successfully. A measure of this sort of alertness could mean a life saved in an emergency as easily as in everyday life it means a seal brought home that might have gotten away."
—Nelson, “Shadow of the Hunter”