The sword is really just an adaptation of another tool, the knife, ergonomically adapted for combat.

FORBES: No. 8 The Sword

Our number one tool, the knife, ranked high on everyone's list.

FORBES: Magazine Article

To demonstrate the versatility of the knife as a tool, the group designed multistage courses featuring a dozen or more cutting challenges.

WSJ: World Championship Cutting Competition Features Knife-Wielding Experts

When slicing the radishes and onions, a mandolin or very sharp knife is the best tool for getting paper-thin rounds and semi-circles.

WSJ: Michael Schwartz's Striped Bass with Grapefruit and Pickled Radish

You will be able to win debates, even though this knife is not primarily a tool for winning debates.

FORBES: Revolution At Work (Highlights: Part 1)

These candidates represented a wide swath of human tool making--from ancient implements like the knife to modern gear like the remote control.

FORBES: The 20 Most Important Tools Ever

What other tool can claim a lineage like that of the knife?

FORBES: Magazine Article