Human interface technology is a new science which must be understood b
y all surgeons in order to cope with the ever-increasing complexity of
surgical practice. This science is the understanding of how humans co
mprehend, interact, and use the world around them. The increasing use
of robotics, computers, and virtual reality depend upon this technolog
y to create a ''user-friendly'' environment to be able to assimilate t
he massive amount of data and images and to ''naturally'' interact wit
h machines and computers. Through careful implementation, more complex
systems will become easier to use and enhance the surgeon-the technol
ogy must adapt to the surgeon, not the reverse.