Day One Hundred and Eighteen, September Eighteenth

How there are so many different things at the beginning of a book. You can often find prologues, forewords, prefaces, introductions, author's notes, and many other useless mini chapters that I ignore. Why do there have to be so many? I do not know the difference between them and find them all very dry and boring. All that stuff should be available in a separate edition or online, but not in the standard print copy since no one cares.