For centuries, the church said "It is like it was in the bible!". Then other things were said and proven, but the church still did not confess their mistake, but instead changed their old misconception -which for centuries they defended with death sentence- by shrouding it into pseudo science.
"The complexity of nature is unthinkable without a creator."
Well, that's because it requires a little thinking about it...
Given the large size of a human body and the even bigger space on it, it's very unlikely, that our teeth grow in our mouths of all things, and not, for example, on our knees. And given the number of humans, it's even way less likely, that I got my own teeth in my mouth, and not, for example, those of a chinaman.
And that the mouth is especially located at the upper end of the gullet, wow, God really designed that nicely that I don't need an artificial anus for digestion! How surprising that generations of living beeings could digest, and that the races have only features, which ensure their continued existence!
(...)
We cannot that, what we know, embedd, into what we only believe. It doesn't work. When science builds a building which explains the world without a God, then you cannot just take that building to the catacombs under the sacristy and say: "Oh, here we are again, you're totally right and we cannot prove you wrong, BUT we had a much better idea: We just don't care, because whatever you may find out, is only that way, because God made it like that!"
That does not work, those are two different systems which contradict each other, they cannot be combined.
Church on the other hand can perfectly handle interior contradictions. That God sent Noah's flood for example is, as the bible says, because he regreted to have created mankind.
So, either he is the -as the same Bible claimed- omniscient God, so he already knew what would happen when he made men. Or, he made a mistake and is not omniscient, and then he is no God.