The Quest to Make a Robot Cat Walk With Artificial Neurons

The little robot finger's favorite color is blue. Wave a handful of blueberries in front of it and the finger will follow, transfixed. If you painted everything around it blue, the robo-digit could well have a heart attack. You can program a robot to fall in love with a color easily enough. But this robot is thinking in a fundamentally different way--not with line after line of complicated code, but with simulated neurons.