Guy Boy is an engineer and cognitive scientist, studying life-critical artifacts in our modern societies. He actively contributed to the design and evaluation of cockpits, control rooms and other interfaces to complex dynamic systems. He tries to close the gap between technology, organizations and people. He worked on the shift from three- to two-crew-men cockpits, the control of orbital refueling system of the Space Shuttle, space robotics, air traffic management, nuclear power plant control and management, car driving, telecommunication network monitoring and model-based respiratory assistance.