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For this month’s Carnival, we shall survey a selection of recent posts that are loosely arranged around the theme of existential threats to contemporary philosophy. I focus on four. Pre-theoretic intuitions seem a little less credible as sources of evidence. Talk about possible worlds seems just a bit less scientific. The very idea of rationality looks as though it is being taken over by cognate disciplines, like cognitive science and psychology. And some of the most talented philosophers of the last generation have taken up arms against a scientific theory that enjoys a strong consensus. Some of these threats are disturbing, while others are eminently solvable. All of them deserve wider attention.