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Differential inheritance is a common inheritance model used by prototype-based programming languages such as JavaScript, Io and NewtonScript. It operates on the principle that most objects are derived from other, more general objects, and only differ in a few small aspects; while usually maintaining a list of pointers internally to other objects which the object differs from.
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To think of differential inheritance, you think in terms of what is different. So for instance, when trying to describe to someone how Dumbo looks, you could tell them in terms of elephants: Think of an elephant. Now Dumbo is a lot shorter, has big ears, no tusks, a little pink bow and can fly. Using this method, you don't need to go on and on about what makes up an elephant, you only need to describe the differences; anything not explicitly different can be safely assumed to be the same.
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Dumbo the Flying Elephant is an aerial carousel-style ride located in Fantasyland at six Disney parks around the world. It is based on Disney's 1941 animated feature film, Dumbo. The original attraction opened at Disneyland on August 16, 1955. The five other versions of the attraction were opening-day attractions at their respective parks. It is the only attraction that can be found at all six Disney castle parks worldwide.
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Object-oriented programming (OOP) is a programming paradigm based on the concept of objects, which can contain data and code: data in the form of fields, and code in the form of procedures. In OOP, computer programs are designed by making them out of objects that interact with one another.