SignificanceDo human societies from around the world exhibit similarities in the way that they are structured and show commonalities in the ways that they have evolved? To address these long-standing questions, we constructed a database of historical and archaeological information from 30 regions around the world over the last 10,000 years. Our analyses revealed that characteristics, such as social scale, economy, features of governance, and information systems, show strong evolutionary relationships with each other and that complexity of a society across different world regions can be meaningfully measured using a single principal component of variation. Our findings highlight the power of the sciences and humanities working together to rigorously test hypotheses about general rules that may have shaped human history.
Can the phenomenon called “global climate change” be witnessed firsthand with the naked senses? The question provokes sharply divergent answers from different individuals and ideational communities. Physical scientists and experimental psychologists tend to regard climate change as inherently undetectable to the lay observer, while others, such as anthropologists, indigenous advocates, and environmentally inclined Western citizens, often claim that the phenomenon is not only visible in principle but is indeed already being seen. A third understanding of the visibility of climate change is held by some scholars who portray climate change as invisible at the outset but capable of being made visible via communication tactics such as the miner’s canary. This paper queries the motivations for and consequences of these divergent answers to a deceptively simple question, ultimately suggesting that the dispute between climate change “visibilism” and “invisibilism” is not scientific so much as political, being a proxy war for a larger debate on scientific versus lay knowledge and the role of expertise in democratic society.
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