When engineers debug circuits, especially sensitive analog ones, they can sometime lose their minds tracking down a problem. In fact, when I worked on debuggin

When engineers debug circuits, especially sensitive analog ones, they can sometime lose their minds tracking down a problem. In fact, when I worked on debugging a circuit that was suppose to measure currents of less than 1pA (10^-12), the setup was so sensitive that the circuit would change it's output if someone walked within 5 feet of the setup. Everyone take two steps back!