This past weekend I went into a book shop in Jackson Hole, Wyoming. I saw an intriguing book and skimmed the back cover. I didn't have paper with me to write down the name of the book. I came out of the book shop, and continued shopping. Later, I realized that I had forgotten the name of the book.
Sadly, the weekend trip is over. I have no name for this book, only a desire to locate it and read its contents.
I may have to visit another book shop again soon, where I will wander through the aisles trying to find the forgotten book. Will I even be certain that I have found the right one?