"Posters can't generate a single example of a weaponless murder or a single example of work completed without a tool. "
Of course not. You only accept your own definitions of all of the words in this sentence. Weapon, tool, murder, work. They all have definitions.
Why don't you let the American Heritage Dictionary define your words for you, instead of defining them by your feelings?
work (wûrk) Pronunciation Key
n.
1. Physical or mental effort or activity directed toward the production or accomplishment of something.
tool (tōōl) Pronunciation Key
n.
1. A device, such as a saw, used to perform or facilitate manual or mechanical work.
2.
1. A machine, such as a lathe, used to cut and shape machine parts or other objects.
2. The cutting part of such a machine.
3. A bookbinder's hand stamp.
4. A design impressed on a book cover by such a stamp.
3. Something regarded as necessary to the carrying out of one's occupation or profession: Words are the tools of our trade.
4. Something used in the performance of an operation; an instrument: "Modern democracies have the fiscal and monetary tools . . . to end chronic slumps and galloping inflations" (Paul A. Samuelson).
weap·on (wěp'ən) Pronunciation Key
n.
1. An instrument of attack or defense in combat, as a gun, missile, or sword.
2. Zoology A part or organ, such as a claw or stinger, used by an animal in attack or defense.
3. A means used to defend against or defeat another: Logic was her weapon.
mur·der (mûr'dər) Pronunciation Key
n.
1. The unlawful killing of one human by another, especially with premeditated malice.
Work without tools-I walked across the room. Physical effort directed toward accomplishing getting myself across the room.
Weaponless murder - Neglecting to take a child to the doctor's office. Neglect is NOT a weapon.
Murderless killing- any lawful use of self defense.