I am not opposed to the theory of evolution or any other scientific inquiry, but I was pondering the fact that we have not discovered any evidence of life on other planets in our solar system. It seems curious that truly spontaneous life would be so limited to a unique set of conditions that exist only on Earth. In addition, it appears probable that at least 99.99% of the universe is utterly devoid of any life forms. What does this say about the Big Bang theory? Was an inevitable development of life built into this process, or is it a unique response to a unique set of conditions that exist only on Earth?