I agree! I read this comment this morning and on the way back from a surf I was thinking about this. I'd swap out fishing (because it's boring, haha, and it's so overfished these days) for foraging for wild seasonal foods and maybe trapping rabbits or something if push came to shove. Plus a good knowlede of herbalism!
Thus, in sum:
- Knowing how to build things like a shelter or a vegetable garden
- Knowing what wild foods to eat or that are medicine
- Knowing how to hunt/fish if push came to shove
- Knowing how to bake bread and preserve food ie pickles and ferments
- Knowing how to harvest honey!