I do think the gun owner is a good example for the given situation it's referring to. I'm not sure 'never tell anyone' is a first rule, although I do agree tha

I do think the gun owner is a good example for the given situation it's referring to. I'm not sure 'never tell anyone' is a first rule, although I do agree that in many situations one could gain more value from other not knowing you have it. There are some situations in which sharing possession of such a tool and the knowledge of using one could be beneficial. Although most of the time, in most situations one would gain advantage in having defensive ability without broadcasting it to the world, and as the parent comment eluded to, one often gets by / through social interactions just fine, and due to some group's disdain for such, often gets by better, without advertising such. imho.