Surviving the World
A Photocomic Education by Dante Shepherd
Recitation #72 - Robot Uprising
And even if scientists (representing mankind who SSgt Martin is referring to as 'we', before you get any ideas about what's going on over there) have completely forgotten to add off switches, I have a third reason for you: EMP. (Here are the studies he is referencing in his question by the way.)
If you have a question for recitation, send it on in! The more the merrier, and then my inbox has a party when I'm not looking.