A robot is just a machine, unless you give it a brain. A brain that has the capacity to think and act independently — and understand fear and self-preservation. In other words, a brain with the intelligence level of a rat. Because one day, a brain like that could enable a robot to explore Mars on its own. It’s this kind of technological innovation that has made Boston University a leading center for discovery and knowledge. And why thinking differently about our world begins with BU.