A security robot just drowned itself, so score one for mankind

Humanity breathed a collective sigh of relief today as the robot army amassing to subjugate us under its shiny metal grip revealed an all-too-familiar Achilles heel: Crippling existential dread.
Or at least that's what it looks like. 
SEE ALSO: Man attacks robot and humanity will probably pay for it one day
What else could explain the July 17 actions of a Knightscope security robot at the Washington Harbour shopping mall? Apparently fed up with the tedious nature of its assigned mall-cop ta