" Perhaps the biggest question troubling us, and not just us but the whole galactic community, is the reason for the similarities in the evolutionary prosesses of technologically advanced sapient species. Science speculates that there might be some kind of meta-DNA within the quark structure of the coal atom that controls the basic paths of evolution. However, this theory has not seen any scientifical proof and thus all kinds of wild speculations about the origin of life, including claims on intergalactic genefarming, prosper. I’m afraid that we might not ever find the answer to this question, but what we can say is that no other life form, than coal based life, has proven to be capable of evolving sapience by its own. "
-Professor Louis Sagan, Xenologistic institute of Earth