well... strictly speaking... knives aren't weapons... they're tools, which some people chose to misuse as weapons... similar could be said about such things as Hammers, Fry-Pans, or chainsaws
knives were used functionally as both tools and weapons at approximately the same time, primitive knives became spearheads. So they are both a tool, and a weapon.
Ditto.
But seriously. I hate bladed edges for fights. No fun. No skill involved.
Blunt objects now... that's a good fight. Blows stack up and the fight doesn't end to a random/lucky hit.
The Spartan has only been out for a few years? No way. I've had one (or at least similar) since Jr High (middle school). Some shit bag thought he could threaten me with some shitty blade thing he had on his keys. The blade was literally 1 cm long. I pulled my spartan out and asked if he wanted to bleed out slowly. He asked me if I wanted to be his friend, and I told him that if he ever pulled a piss weak blade on me, or blade of any matter, I'd turn him into a bloody pulp. He never spoke to me again.
Knives are ok to balance the playing field. But to be the first to whip one out... imo that's just weak.