Market Pull- about what the customers want. designers design stuff to satisfy the wants and needs of cutomers.changing fashions and social attitudes affect the kind of product people want.
Technology Push-Manufacturers can use new technology to develop new products or to improve exsisting ones. doing this might make a product cheaper, better at its function or nicer-looking.
Sometimes products evolve because theres a social or cultural need.(windup radio)
or because theres a political or environmental need.(cars)
Arts & Crafts- upright and dangular, normally made…