Storing Shelf Stable Foods verse “Survival Food”. Your article indicates that shelf stable foods are “non perishable” and “Most shelf stable foods are safe indefinitely” per the USDA. Given that, is there any need for the Survival foods? Are the food storage procedures you suggest sufficient for storing the shelf stable foods for 20 to 35 years? Will a can of food sit on a shelf away from heat light, etc. for 20+ years and be edible? Will shelf stable foods in other packaging, e.g.: plastic bags, cardboard boxes, etc. last for 20+ years with proper added packaging? I understand your caveat about this being an inexact science. I am just looking for some guidance as I get started on having more than a two week supply of food.