Crazy Knives

A knife is a sharp-edged (single or double edged) instrument consisting of a thin blade used for cutting and fitted with a handle. The knife can be used as a tool or a weapon. Considered by some to be one of the most useful tools of all time, its origins date as far back as two-and-a-half million years ago The earliest knives were shaped by percussion flaking from rock, particularly water-worn creek cobbles made out of volcanic rock. During the Paleolithic era Homo habilis likely made similar tools out of wood, bone, and similar highly perishable material that has not survived.[2][3] As recent as five thousand years ago, as advances in metallurgy progressed, stone, wood, and bone blades were gradually succeeded by copper, bronze, iron, and eventually steel. Modern knives may be made from many different materials such as carbon fiber, ceramics, and titanium. Knives gained prominence during the Middle Ages as one of the three major items of cutlery in the western world, accompanying the fork and spoon, and in this way much of the world's population is exposed to knives on a daily basis.