My mother is an elementary school media specialist, and she always taught me never to dog-ear a book. As a result, I own a number of bookmarks. Sure, they masquerade as other things - receipts, wrapping paper, socks - but their real purpose in life, the reason they were put on this Earth, is to function as cutting-edge bookmarks. Why? Because there is nothing more frustrating than re-reading something 12 times, or being in the middle of what can only be described as the greatest love story mankind has ever been privy to (thank you, Nicholas Sparks), and losing your place because a child needs attention, or you fall asleep and the book falls off the bed. You see, these are real issues, and bookmarks fix them. Such a small thing, but what a big invention.