Jacob, what is the agent of spontaneity? What is the source of the "plan" in DNA?"

Mackenzie, iron suffers oxidation due to the O2 in the air. Humidity facilitates the reaction between iron and oxygen. In the course of billions of years, the elements and minerals present on planet Earth --originated in the star that exploded as a supernova-- reacted through the agents: water as a solvent, contiguity of the reactants, heat from the Sun and from thermal vents, and also lightnening.
The resulting compounds again reacted. Of the billions of new compounds, some were capable of again interreact, most were not. This was a mineral evolution, resulting by chance in molecules that had fascinating characteristics, such as enzymatic RNA and proteins. DNA eventually also was created, although probably only after the appropriate enzymes were present, originally by slow, nonenzymatic processes. Once enzymes appeared, chemical processes accelerated immensely, opening the road to biology, i.e., to life..

All these phenomena were spontaneous, meaning that man did not plan them. Whether animals can consciously plan is a moot, irrelevant point for this dialogue. When man executes an experimental procedure, he exploits spontaneous processes in a controlled manner.
As for a supernatural 'plan,' had there been one, not much intelligence was involved, since everything could have appeared in a second, through magic. And everything would be perfect. Man would not have to improve defective genes, nor would medications have to be contrived to fight diseases. Biological evolution is lazy, following physical laws, which determine parsimonius use of energy. Drugs are being created to fight the ravages of age, because biological evolution was not 'interested' in unfit old men and women. Man is fighting blind (spontaneous) evolution, making plants with better genes. Animals are also capable of being planned with genes that confer what researchers might consider as desirable characteristics.