If you think of the product as a service, then the separate parts make no sense - the point of a product is to offer great experiences to its owner, which means that it offers a service. And that experience, that service, comprises the totality of its parts: The whole is indeed made up of all of the parts. The real value of a product consists of far more than the product's components.
Donald A. NormanThe design of everyday things is in great danger of becoming the design of superfluous, overloaded, unnecessary things.
Donald A. Norman