"A notebook is a muggle alternative to carrying around unbound sheets of parchment. I know all you purebloods think you have the best of everything, but really muggles have ingenious inventions that make their lives so much easier. Take a pen for example. No need for a quill or pots of ink. Now, I won’t deny that there’s something artistic about writing with a quill, but this is so much more convenient. Here, try it out."