A Dangerous Box

My colleagues and I recently discussed how people seem to stop thinking when they are looking at a computer screen. People seem to believe what "the system" says, even when it may be nonsensical (e.g., in the case of an obvious data error). I don't quite understand this behavior. "The system" is only as reliable as the data that are in it. In some cases, the data are flat out wrong. Some people can't grok that I suppose. That's a dangerous box to live inside, don't you think?