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December 17, 1982

Aristotle's Anomaly-Reply

Author Affiliations

Mayo Clinic Rochester, Minn

JAMA. 1982;248(23):3095. doi:10.1001/jama.1982.03330230017012

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In Reply.—  We appreciated seeing the comments of Dr Harnes concerning Aristotle's anomaly.The following two additional definitions of Aristotle's anomaly have come to our attention:

  1. 1. "When the first and second fingers are crossed and a small object such as a pencil is placed between them the false impression is gained that there are two objects" (Butterworth's Medical Dictionary).

  1. 2. "When a small object is held between the first and second fingers crossed in such a way that it touches or presses upon skin surfaces which ordinarily are not pressed upon simultaneously by a single object, it is perceived falsely as two" (Stedman's Medical Dictionary).

Perhaps Dr Harnes can use these additional definitions to test Aristotle's anomaly further.