What does Irreducible Complexity Imply?

"From within the highest ranks of the scientific community comes a startling new theory of creation that not only contradicts Darwinian orthodoxy but opens the door to theological arguments biologists have dismissed and ridiculed for more than a century." Biochemist Michael Behe wrote Darwin's Black Box in 1996. This giant in the scientific community argues cogently that the mechanisms inside even the simplest cells make Darwinian Evolution a scientific impossibility. If he is right, it leaves, in my mind, only two possible realities, that really represent one: An intelligent designer. But before you click off, tell me what you think. As the scientific and non-scientific communities come to terms with the facts, which will win out-extraterrestial higher intelligence or a creator god? Are they the same or different options? Is this much ado about nothing or the proverbial last straw that will bring down the already shakey support for Darwinism?