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From: Laws@STRIPE.SRI.COM (Ken Laws)
Newsgroups: comp.ai.digest
Subject: Natural Kinds
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Date: Sun, 12-Jul-87 00:45:36 EDT
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Posted: Sun Jul 12 00:45:36 1987
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I would not be so quick to thank recent philosophers for the concept
of natural kinds.  While I am not familiar with their contributions,
the notion seems similar to "species" in biology and "cluster" in
engineering and statistics.  Cluster and discriminant analysis go
back to at least the 1930s, and have always depended on the tendency
of objects under study to group into classes.

					-- Ken
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