Take Your Order (TYO) is a company that specializes in taking product orders for vendors. The manufacturer of a product can run a television or internet ad for a product with a toll-free number. Customer calls for the products are routed to TYO, where one hundred operators are available to receive the calls. Each operator is assigned a cubicle with a computer terminal, video display monitor, and a telephone. TYO experienced high workers compensation claims from its operators, claiming next strain, eye strain, and wrist pain. In an effort to reduce such injuries, TYO evaluated each operator's work area. The height of chairs and video monitors were adjusted, curved computer keyboards and wrist-rests were provided, and the telephones were replaced with audio headsets. Workers compensation costs dropped significantly. The science of designing work spaces based on interaction between people and the equipment in the work space is called