In rough order of addition to the corpus of knowledge:
The scientific method.
Basic survival skills (e.g. navigation).
Edit: Basic agriculture (e.g. animal husbandry, crop cultivation).
Calculus.
Classical mechanics.
Basic chemistry.
Basic medicine.
Basic political science.
Basic sanitation!
Yes! Insert sanitation between 3 and 4, and insert construction (e.g. whittling, carpentry, metal casting) between sanitation and 3.
For survival skills, I’d suggest buying this one before the disaster, while there’s still internet.
In rough order of addition to the corpus of knowledge:
The scientific method.
Basic survival skills (e.g. navigation).
Edit: Basic agriculture (e.g. animal husbandry, crop cultivation).
Calculus.
Classical mechanics.
Basic chemistry.
Basic medicine.
Basic political science.
Basic sanitation!
Yes! Insert sanitation between 3 and 4, and insert construction (e.g. whittling, carpentry, metal casting) between sanitation and 3.
For survival skills, I’d suggest buying this one before the disaster, while there’s still internet.