It's an easy to understand book which defines the position of intelligent design. This concept is different than creationism. It uses a filter, and specified complexity which can be conducted in a lab to make it's conclusions. The book also refutes some basic arguments against ID, exposing the evolutionary bias, and makes a pretty good case of it's own. Even though I don't agree with everything in the ID realm, the book is worth reading even for those who oppose the idea.