UTC Do prototypes necessarily use a sort of prototyping material Aren t models made of a different material called a mockup or something of the sort In that case the chef example above doesn t work the new creations are prototypes As for the others the newspaper industry does use prototypes That is the first version referred to above The first version is the definition of prototype the prototype is the first version The coal industry could benefit greatly from prototypes and I m sure they use them already There are immense safety concerns to name one only area in which a model perhaps not full sized of a coal mine would work Additionally the coal mines themselves are not the only asset of the coal industry you have countless types of vehicles mining equipment and support equipment Milking cows there would of course be no cow prototypes as cows are not the product of the dairy industry Instead milk is And I would hope there is prototype milk a sample of the milk throughout its development cycle to make sure it is safe and clean As for pet stores it is right that they would doubtless have a need for a prototype However a prototype is used for a product A pet store has no products instead they offer a service They do not produce pets they recieve and sell them Even pet breeders do not produce the pets they just reap the benefits of reproduction 03 41 5 February 2007