Donovan said, "You see when activity intensifies, anything can happen, given one single faulty part. Insulation breaks down, a condenser spills over, a connection sparks, a coil overheats. And if you work blind, with the whole robot to choose from, you’ll never find the bad spot. If you take Dave apart and test every point of his body mechanism one by one, putting him together each time, and trying him out—"