 This is not a good book. It's poorly written and poorly thought out, but it's one of my favorites because I've owned it since I was in fourth or fifth grade, and I've always loved this cover. Look at this great cover painting. And as a child artist, I learned a great deal from these simple chapter illustrations how just a small, simple bit of line work could tell a story. And the reason I'm doing this book report now is because, interestingly enough, the principles of the propagation of light through space and time that are used in this story, as the basis for time travel, are the very same principles that were used in light of other days by Clark and Baxter, which was in my previous episode.