PHILCO: Was that Friday, one-and-a-half billion years ago? 'Cuz I didn't get my copy of the Times that day!

VERONICA: A branch of the House of Archaeon--the old ones who established life on Earth four billion years ago--a branch of that dynasty, the Asgardarchaeotes, created an altogether new form of life through a process called endosymbiosis! They basically subsumed and enslaved purple non-sulpher bacteria that had learned how to produce energy from raw materials, whereas previously cells only survived by eating other cells!
VERONICA: Once an independent branch of the Tree of Life, this separate one-celled creature became an organelle called 'mitochondria' in the advanced cellular structure of the newly empowered Asgardarchaeons.

PHILCO: Now, come on, Veronica! You're talking about antediluvian, one-celled creatures as if they were in a drama straight out of the House of Plantagenet!
VERONICA: Look! We just saw how the human form appears to other, equally sophisticated forms of life on earth! Let's face it: our understanding is confined to a closet of senses that didn't evolve to see reality entire: only enough to survive. Humanity is clueless about life's essential narrative! Individual, one-celled organisms are connected in ways of which we have no understanding, and they behave like an ancient clan in a stately mansion, not as billions of drifting soap bubbles!

What I'm trying to tell you is that all life on Earth belongs to one of two families: the Archaeons or the Eukaryotes, descendants of the Asgardarchaeotes. So, yeah, one-and-a-half billion years ago it was a major revolution when the clan of Asgard went full-bore Prometheus and stuff, essentially bringing fire to the blind, anaerobic, bacterial masses!