The theory of evolution as explained by spontaneous generation. How does all this life come about? There is no evidence at all to show how even the most basic of organic cells formed on this planet. The theory of evolution doesn't mean much without something to begin it, the evidence doesn't authentically support the theory with an original root. The main theory of the origin of organic matter is spontaneous generation. Regardless, there is no evidence for the physical beginning of the biological evolutionary theory. It is all so theoretical in fact that I don't understand you're utter confidence in saying that my petty inference is definitely "not" how humans arise. Or are you a Fully Enlightened Buddha?
When I was talking about the evolving phase and using the term "evolving", I was talking about the world-system evolving, not biological processes. I don't think that the evolution of man is important. The Buddha was born as a human and taught what he taught. I think that he was Fully Enlightened.
I agree that he probably didn't know much about genetics or biochemistry, but I do think that he knew clearly how everything formed and dissolved from a human perspective. Or was he not a Fully Awakened Sammasambuddha? He wasn't merely an Arahant or Savakbuddha (from commentaries), he was distinguished among all awakened beings, a Bodhisatta.
I understand that you're not convinced that the Buddha knew how human beings arose on this world. Many Buddhists on this site seem to share this sentiment. I couldn't disagree with the idea more, no offense. And I wouldn't argue about on a Theravada forum. At all.
Sometimes no Buddhas arise in the world. Sometimes they do. When it happens, it is for the welfare and happiness of men, out of compassion for all creatures. For a long, long time he has been working to become a Buddha. He met other Buddhas along the way. And after his long striving he attains his final life, yet not without showing everyone else how to get there.