There are many feel-good and lukewarm doctrines prevalent today through all forms of media, but Heredia, through the use of personal anecdotes and through a faith-led, logical questioning, challenges the reader to go beyond your comfort zone, to think critically about life, faith, the church, God and how these powerful forces in our lives direct and shape us and our thought-processes.
"Cardboard Astronaut" is an easy read - meaning that you won't need a writing jacket, pipe, and absolute silence to become involved with the book. His writing style is casual, almost conversational at times, making the reading very enjoyable. The challenging aspect of the book comes not by deciphering his prose, but by his ability for the reader to actively engage with the material.
In the vein of Don Miller's "Blue Like Jazz," "Cardboard Astronaut" will help you examine your conceptions of the church, what is means to be a Christian in the new millennium, and how you can actively engage in the kingdom of God.