> This will either make your students smile, or give them nightmares:
>
>   https://www.youtube.com/watch?v=6657_g_yMyo

The next step will be robotic porch pirates, which can use most
of the same technology. That will lead to demand for robot guards
to defend against porch pirates, then decoy robots to distract the
guards, and eventually to roving robot gangs. Stay tuned.