"Virtual reality simulation and computer gaming are powerful tools for conditioning human behaviour," he says. "Both technologies enable users to experience a range of situations that would otherwise be impossible, or prohibitively dangerous or expensive." ed.z.: this is medium humorous to me, in a "ya, I can see where they might need a scosh more training", manner, because I worked a few steel jobs with some crazed aussie climbers who just slap refused to use personal safety lines or to safe their tools. I made a point to work in pass lines where they weren't above me;)