The science behind evolution suggests that the transition from cells without a nucleus to cells with a nucleus is perhaps the single greatest leap between there and here, and that it came about by the inclusion of some cells in some other cells. The term of art here, endosymbiosis, credits the ability to respire, move, and photosynthesize as results of the inclusion of more primitive forms within other forms, and that this inclusion, being beneficial to both the outside and the inside, was durable because it was symbiotic and vice versa. As Margulis and Sagan famously said, "Life did not take over the globe by combat, but by networking." Columnist Dan Geer takes a look at how this concept translates over into networked systems.