Industrial Design is concerned with all the human aspects of machine-made products and their relationship to people and the environment. The designer is responsible for these products and their impact on society and nature. The designer accounts for the product's human factors engineering, safety, form, color, maintenance and cost. Industrial design deals with consumer products as well as industrial products. In order to achieve these ends, designers must be involved in four major design and research activities: human behavior, the human-machine interface, the environment, and the product itself.