Final answer:
G404 suggests a safety or strategic guideline against storing dangerous or conflicting items together, which can be related to historical advice on avoiding putting non-combatants at risk and the safe storage of potentially reactive materials.
Step-by-step explanation:
When we Explain G404: Don't hoard opposing CARGO, we could be referring to a safety or strategic protocol in a context such as logistics or transportation of goods, which includes the handling of potentially dangerous or conflicting items. Although the exact origin of 'G404' is unclear from the question, the phrase resonates with the concepts of safety and strategy, which we can relate to historical policies and military tactics. Drawing a parallel to history, the saying 'a ship carrying contraband should not rely on passengers to protect her from attack' by US Secretary of State William Jennings Bryan signals the ill-advised strategy of placing non-combatants in harm's way during conflicts. Similarly, in a logistics context, 'G404' suggests not accumulating goods that are antagonistic or might react dangerously when stored together - akin to avoiding stacking lumps of fissile material together as mentioned in the reference provided.
This advice strikes a resemblance to the field of safety regulations, where materials that might interact in a harmful manner, like chemicals or explosives, should not be kept together to prevent any unintentional and dangerous reactions. Therefore, 'Don't hoard opposing CARGO' serves as a warning to avoid putting oneself and others at risk by mishandling incompatible items.