The less lethal the weapon at hand, the less likely death will follow.

ECONOMIST: Why do so many young Americans end their own lives?

Det Insp Pirie said: ''A knife, even a kitchen knife, in the wrong hands is a lethal weapon.

BBC: Dundee woman guilty of murdering a man during a drunken row

This occurred to me (yet again) during the deafening first sequence of "Lethal Weapon 4, " which consists of an armor-clad gunman with a super-deluxe flame thrower and a submachine gun walking through what looks like the rainstorm that forced Noah to build an ark.

CNN: 'Lethal Weapon 4': Saying nothing, but loudly

Despite the unsettling notion of a technology that lets anyone download a lethal weapon as easily as an pirated episode of Game of Thrones, regulating 3D printing to prevent gun printing would be both counterproductive and ineffective, argues Michael Weinberg, an attorney with the non-profit Public Knowledge who focuses on the legal issues around 3D printing.

FORBES: 'Wiki Weapon Project' Aims To Create A Gun Anyone Can 3D-Print At Home

No matter how much instruction you may give him or her, a youngster in the middle years is not mature and responsible enough to handle a potentially lethal weapon.

CNN: How we can keep kids from shooting people

This weapon, which is called the Active Denial System, has been developed by the Joint Non-Lethal Weapons Directorate, in collaboration with Raytheon.

ECONOMIST: Electromagnetic weapons

The primary weapon: pumping more money into public-service advertisements that urge young people not to take up this lethal habit.

FORBES: Fact and Comment