I don't think anything came from a rock. Dogs came from wolves, which have a series of ancestors all the way back to the first canine, back to the first mammal, back to furred reptilians called cynodonts and their ancestors all the way back to the first reptile, first amphibian, first fish, first eukaryote, all the way back to the first single celled (over 3.8 billion years), which came from the molecular bonding of the basic building blocks (carbs, lipids, amino acids, etc), which formed when electricity bound certain elements together in water, which came from comets, formed over time by leftovers from the formation of stars. These are made of elements other than hydrogen, which all formed because stars fused hydrogen together (that is why stars work). Hydrogen first formed when some energy became matter, which then became quarks. Up and Down quarks binded together and formed protons and neutrons. These binded and formed hydrogen. Eventually, the force of attraction between particles (gravity) condensed gas into the first stars, then they started fusing. All energy came from the Big Bang, which was an expansion of the universe making physics possible. This happened, according to physicists, because heat energy naturally spreads to spaces where there is less of it (this is entropy). As to why this happens, we don't have an answer yet, but we'll figure it out some day.
1. We know how buildings are made. But we also know how plate tectonics, physics, biology, paleontology, geology, taxonomy, radiology, chemistry, zoology, cytology and biochemistry all work, which in turn lead to us understanding how "complex things" like auroras, magnetism and solar winds really work. However, to believe in the Watchmaker Theory, you don't have to understand anything about anything concerning how the natural world works besides what the citizens of Catalhoyuk knew, which is, nothing besides that there are forces that control things and some people get sick.
2. More complex. Does one molecule RCH(NH2)COOH look nearly as complex as insanely more ionic and molecular compounds bonding in certain shapes that are cut, shaped, placed in certain places where they can best counteract the forces of gravity and remain stable as one building?
3. NASA recieves signals of multiple wavelengths, not messages. Messages are just people mistaking random sounds of words for things, just like how we mistake some Mesa formations for pyramid ruins.
4. I don't. I just explained why.