In the story "Winter's Tale" by Mark Helprin, the character Isaac Penn prioritizes security, designing his home to be a fortress. He goes beyond standard measures to ensure safety, transforming what one would expect as a vault into an impenetrable barrier made of molybdenum steel. This design is not only robust but extends deep into the wall, providing an added layer of protection.

Isaac's foresight in using such a strong material highlights his understanding of the need for security against intruders. The extensive design serves to further deter potential break-ins, suggesting that he wanted to create a space where any intruder would be occupied and ultimately thwarted by the formidable defenses he put in place.