Imagine a 300-pound male bear at the edge of a hardwood forest that borders a crop field bursting with ripe corn. Does he take a detour to avoid venturing into this exposed area, or does he walk in and enjoy the abundance of food? Would it matter if this was the only crop field in the area or adjacent to five other fields? Or if there were many bears in the area? Or if there were people nearby? What if this bear was a sow with two cubs in tow?