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As far as I can tell, Sapiens the anthropology magazine is unrelated to Sapiens, the book. The value of its contents should probably be evaluated along with the field as a whole (which tends to fit somewhere between archaeology and sociology on the Science Field Mohs scale).

I haven't read The Dawn of Everything, but I have read other Graeber books. His ideas are interesting, but "clear on what is research and what is opinion" is not the impression I would take away. "Willing to draw grand conclusions about the arc of history from research based on tiny, unrepresentative data sets" is more like it.