Aspects of this topic are discussed in the following places at Britannica.
...is made to all members of the class. For example, in “Some crows are not friendly,” reference is made to all friendly things but not to all crows.) The fallacy arises when a major (or minor) term that is undistributed in the premise is distributed in the conclusion (example: “All tubers are high-starch foods [undistributed]; no squashes are tubers; therefore, no squashes are...
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