A receiver and amplifier receive the radio waves from the sub reflector, and make these weak radio waves strong enough to be recorded and turned into electronic signals.
If the robot is unsure whether an animal is suitable for the microwave, it has the opportunity to stop, sent out beeps, and ask for directions from a human.
And what public housing remains has become ever more prison-like, with random police sweeps and, in a growing number of cities, proposed drug tests for residents.