Even Robots Can Be Heroes

For all organisms, the ultimate goal is to pass on one's genes. The problem with altruism is that sacrificing individual gains for the greater good can compromise that goal

The robots have two independently operating wheels and a "nervous system" composed of sensors and a camera, which allow them to detect small discs - a stand in for food.

Some of these "mutations" helped the robots better gather the food disks, while some made the robots less efficient at the task.

The more closely related the robots, the quicker they cooperated.