What are natural kinds?

My friend Dan Kauffman (Missouri State University) and I just published a new video conversation, on the topic of “natural kinds.” What are they? Do they really exist? Among other things, we discuss what the former planet Pluto can teach us about natural kinds, and explore why I changed my mind, over the past several years, about the ontological status of theoretical entities. Enjoy!

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Massimo is the K.D. Irani Professor of Philosophy at the City College of New York. He blogs at platofootnote.org and howtobeastoic.org. He is the author of How to Be a Stoic: Using Ancient Philosophy to Live a Modern Life.

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