Do bear attacks touch people in the far-back recesses of their psyches? Reach latent ancestral memories of cave days when humans were potential prey? Indeed, there are those who say their nightmares involved bears before they ever saw one, either in the flesh or in the movies. Unfortunately, these nightmares all too often come true. People perform almost superhuman feats in their fight to survive bear attacks. Jim Marriott, for instance, was attacked and mauled by a grizzly while carving out a moose head. When playing dead didn't work, he slammed his skinning knife into the attacker's neck....