What skills should every man know?
A vast amount of ink and e-ink has been spilled on the subject. But why?
Part of being a man is being competent and effective in the world. To do that, you've got to have skills. A man wants to know (or at least feel like he knows) that no matter what situation he's placed in, he'll be able to handle himself — to act rather than be acted upon. Hence our incessant drive to figure out what skills we'll need to know in order to demonstrate confidence and capability in our manly roles as procreators, protectors, and providers.
For primitive man, this needed skill-set was clear and relatively narrow, largely revolving around the jobs of fighting and hunting.
The breadth of skills needed today, however, is much wider. The modern man must be both a warrior and a diplomat, a woodsman and a scholar. We need both hard skills and soft skills; skills we use every day and skills we keep in the back pocket, just in case.