An Open Source Book That Teaches JavaScript
Does anyone else get frustrated when they see, in blogs, articles, or books, introductions such as this:<p>> Computers are common in today's world, as they are able to perform a wide variety of tasks quickly and accurately. They are used in many different industries, such as business, healthcare, education, and entertainment, and have become an essential part of daily life for many people. Besides this, they are also used to perform complex scientific and mathematical calculations, to store and process large amounts of data, and to communicate with people around the world.<p>Anyone who would open this book must already know all this. Is there anyone who does not know that computers  are everywhere? Does any prospective reader of a book on programming feel that computers are not essential? Does anyone doubt that complex scientific and mathematical calculations are made on computers? Who is this paragraph for? Who has taught us not to proceed straight to business?