Each type of visual aid has pros and cons that must be evaluated to ensure it will be beneficial to the overall presentation. Before incorporating visual aids into speeches, the speaker should understand that if used incorrectly, the visual will not be an aid, but a distraction.
Book design is the art of incorporating the content, style, format, design, and sequence of the various components of a book into a coherent whole. In the words of Jan Tschichold, "methods and rules upon which it is impossible to improve, have been developed over centuries. To produce perfect books, these rules have to be brought back to life and applied."
Front matter, or preliminaries, is the first section of a book, and is usually the smallest section in terms of the number of pages. Each page is counted, but no folio or page number is expressed, or printed, on either display pages or blank pages.
If you look at space companies, they've failed either because they've had a technical solution where success was not a possible outcome, they were unable to attract a critical mass of talent, or they just ran out of money. The finish line is usually a lot further away than you think.