Prototyping serves to provide specifications for a real, working system rather than a theoretical one. In some workflow models, creating a prototype (a process sometimes called materialization) is the step between the formalization and the evaluation of an idea. A User Experience Prototype captures enough aspects of the intended design that it can support user research. 2  A Visual Prototype captures the size and appearance, but not the functionality, of the intended design.
In the mid-1930s, the last main improvement to the leather football helmet was introduced: The facemask. Vern McMillan, who owned a sporting goods store in Terre Haute, Indiana, was credited with inventing the first facemask design.
It started with young men, from Perthshire and the Highlands mainly, who gathered at Queen's Park in Glasgow in 1867. They obtained a copy of the FA laws and amended them to conform with an almost scientific blend of dribbling and passing. When they invented passing, these lads invented football.