The saying "Look behind you" is commonly referenced among the people of the North, symbolizing the necessity of vigilance. This expression reflects the belief that individuals must be constantly aware of their surroundings and be prepared to defend themselves against potential threats. It emphasizes the importance of readiness in an unpredictable world.

In Michael Crichton's "Eaters of the Dead," this saying encapsulates the themes of survival and self-defense. The narrative suggests that awareness and preparedness are crucial traits for enduring challenges, reinforcing the idea that one must always be ready to confront danger, whether from external forces or imminent threats.