Myonself...I will blame my illustration for your missing the point. In my illustrastionthe cat and the spider and I myself had not planned the unique convergence of events and so therefore were not responsible for anything other than their respective roles. For the moment ignore the spider cat and me. The point being illustrated was the faulty logic of post hoc arguments. For you to suggest a supernatural design is supported by the improbability of the events that were essential for life to be as it is, is the same as my arguing for god's supporting my going to the strip bar which was the result of millions and millions of improbable coincidences, most of which are beyond my control.For instance the billion to one chance my parents gametes met and implanted, the entire youth with all its trillions of events which enabled me to survive to this day, my living near the strip club, I got the job that gave me extra money for such things, That Kart was open and gave me a refund for a returned item that gave me the $5 cover charge, that my toyota made it to the place dispite having 250,000 miles on it,That the owner of the club got his buisness license dispite protests, on and on and on to the point of dizzying nausium. The only reason I would be impressed with this mass of coincidences would be IF someone years ago had predicted or announced that on Jan 3 2003 10:30 pm Peacefulpete will be at the nudey bar in xville. Then it would be evidence of some supernature involvement. If you think about it carefully you will see that this is the normal way we judge our world and rightly so. Yet in the question of human origins or other emotionally charged subjects this objectivity vanishes. It is this very same faulty logic that "confirms" superstitions of all sort. How often the phrase "It COULDN'T be a coincidence!" has been used by believers in fate or voodoo.
Besides this, the fact that atoms act consistantly makes the universe as a whole as it is unavoidable. Contingencies resulting from intelligent or semi-intelligent life forms have also shaped our world in a less predictable way it is true but no one mind has governed these actions to an end.
By the way the radio signal was in real life the first radio pulsar discovered not intelligent life as was hastily concluded by those with the desire to believe in alien life. A perfect case against attributing to intelligence what inanimate forces can do by simply being consistent.