The title is the first thing you read, and it is not a question; because it is informative, not inquisitive or imperative. How many times have you seen modern literature that uses a question as the title of a book, article, or chapter? Hopefully not too many. I see this published on the Internet and in college textbooks, using a question as a statement, and often I have to just cross out the word what, and make a title look like a statement, and not a question. Please inform others of knowledge, and don't just ask me for it.
When people are writing, they should not use where when why what who or how as the beginning of a statement, because that is how you start a question. That is how you ask someone for an answer, not how you tell them the answer. If I was reading something that asked me a question right from the start, then I would not continue reading at all, but rather be engaged in searching for the answer to that question. When you ask me the question, I give you the answer, because that is the format. When I ask you the question, I don't give you the answer, because you are the one who give answers to my questions.