It is also important for the specification to tell a story, i.e., the specification should highlight the invention by describing its background and the problems to which the invention provides a solution. A description of the best known prior art and its deficiencies serves to aid in distinguishing the invention from what has been done before. Your knowledge of the invention's advantages, in contrast to the deficiencies of the prior art, should be communicated to the patent lawyer at the beginning to aid him in drafting the application.