Every human-made object has a design. Throughout history, people have learned that the design or shape of an object has much to do with its usefulness. As people discover new materials and learn to produce things more skillfully, designs change and objects become easier to use.
When people made objects only by hand, designs changed slowly. But with the increased use of machines during the 1600's, changes in design began to occur more rapidly. By the 1830's machines of all kinds were in use, which also allowed identical products to be made quickly and by the thousands.
Early machine-made products were copies of handmade objects, but the machines of that time were unable to reproduce many of the beautiful details of what had been designed as a handmade product. As a result, many early manufactured goods were clumsy. Also, the person who operated a machine was not able to change a product's design. If a product needed a new shape, someone else had to design it. The machine would then have to be changed so it could make the redesigned product.
Today new product designs and design changes are created by industrial designers--people who are specially trained as planners and stylists of mass-produced, machine-made goods. In fact, the designs of almost all the manufactured objects we use, such as cars, bicycles, toasters, telephones, and pens, have been created by industrial designers.