It all seems to have started with the canted hilt; it added valueable leverage to the straight, double-edged swords of steppe people. Inevitably, the edge to which the hilt was canted became the “primary cutting edge” in use. Then they started to shorten the “secondary cutting edge” where it had no practical use; in the beginning ¼ from the hilt was left unsharpened. When they realized that they could improve the cutting ability by giving a convex curvature to the blade, they further reduced it to ¼ from the tip and they come up with the earliest saber.
Is this a too short summary?
