[citizenpaul]

I never said anything about warfare. I said killing other humans.

Same as this blade has no utility purpose due to its curved shape. Other than killing a human. You can find knife combat videos online that will show the optimal stab points to quickly kill a person using this type of knife. I'm guessing people back in the days had this information as well for the similar blades in the article.

https://www.spyderco.com/catalog/details/C12G/Civilian-reg-C...

I would speculate that simply carrying such a blade openly would indicate to someone that you are familiar with life or death combat and willing to go there if necessary. Open carry has always had the secondary purpose of showing that you are not an easy target.