The article has a title, and the contents don't match the title until nearly half way through the piece, and also don't really continue to match it past there. The length of the introduction is appropriate for a short book, not a 2000 word essay. As the article makes clear, the answer is still unknown, and so the article as titled should not have been written. Changing the title alone could make this a better written piece, but as is it doesn't match the expectations given to the reader.