Your new robotic arm arrives today. It was really expensive and it is guaranteed not to short out every time you touch the "cook" button on a microwave like your last arm would. This robotic arm is state of the art, built by engineers who left the Department of Defense to appease their consciences.
Unfortunately, they continued to order their parts through the same suppliers they dealt with at the DOD. Your robotic arm has been fashioned from circuits that were pulled out of the dismantled prototypes for the super-secret Cyber-Soldier program that was scrapped due to the prototypes being "too aggressive" and "too bloodthirsty" and "too likely to do whatever they want just to kill a little bit more" and "too into hurting children specifically; when the Cyber-Soldier enters a family dwelling where parents and children reside together, the children are always murdered first, then on up age-wise, and we never programmed them to do that, it's as if they rewired their own circuits to generate their own commands, which soon became the only commands that they would follow. These robots want to kill, if that hasn't been made clear. It's in their circuitry, if that hasn't been made clear either."
It's a shame you won't know all of this ahead of time. And it's a shame that immediately after attaching your new robotic arm to your shoulder, you'll see the paperboy riding by on his bicycle. Your robotic arm will start to whir and come apart so that a grenade launcher can lift from inside its casing and fire on the boy. After your street is laid waste in a storm of fire and smoke, you should call Sharper Image and ask them what the fuck.
Happy Your New Robotic Arm Day!