This chapter takes stock of the current situation confronting political theory. I introduce the concept of “digital lifeworlds” and explain its relevance in the narrative of humanity. I use Max Tegmark’s distinctions between Life 1.0, 2.0, and 3.0, respectively, for guidance in locating digital lifeworlds in history. We do not know if Life 3.0 (the kind of life that designs both its culture and physical shape, the physical shape of individuals) will ever arise. But if it does, it will be from within digital lifeworlds – lifeworlds that already fundamentally change our lives and thus require intense scrutiny even if there will never be a Life 3.0. To understand these lifeworlds, we need appropriate notions of “data,” “information,” and “knowledge” and characterize the connections among them. To that end, we enlist Fred Dretske’s understanding of knowledge in terms of flow of information. Such a notion of knowledge allows for a broader range of knowers than humans (to whom classical analyses were limited): It includes both animals and artificially intelligent beings as knowers. I also draw on Luciano Floridi’s work on the philosophy of information for a related look at digital lifeworlds from a more detached standpoint (“infospheres populated by inforgs”).