This book is so good! Roth has created a world that is impossible not to get lost in. This book is a great page-turner, and I can't wait to see the movie! :D I recommend this to anyone who enjoys a good book. :)

It's practical because it can eliminate the use of most, or all, street lights, which would save a lot of power and money. Also, it uses more or less light when necessary. It gives a clear path to walk or drive on at night, while also being economically useful, environmentally friendly, and aesthetically pleasing.