[It is more loaded a question than Geir might think; Dirk could answer in varying levels of detail, but given that Geir isn't exactly seeming to totally understand robots yet, Dirk figures they can work towards it.]

It's sort of like a puzzle you design in your head while you make it. There's an intellectual and creative challenge in working out the form and build of the robot, on top of the physical satisfaction of putting it all together. It's cool.