A pair of government officials pull up in a black car to a massive crater; pull an Apple engineer out of the rubble
Federal agent: What happened?
Engineer: I can't explain it; Siri was always the perfect electronic assistant untilβ
Agent: *Sucks air in through teeth* Electronic, you say?
Other agent: *Shakes head*
Agent: You know that if you want it to be Three-Laws Safe, it has to be positronic, right?
Other agent: *Taps on the cover of I, Robot they happen to have with them*