Connections With Logical Principles
The logical roots of the Holmes remark speak to the principle of excluded middle. That indicates the importance to case analysis of logical disjunction: stringing together propositions with the logical connective "or". Medical diagnosis can indeed follow the Holmes pattern, with a patient's symptom possibly caused by a number of conditions: the patient suffers from A or B or ... or illness I; see differential diagnosis. Deductive logic is applied to reducing the number of cases; see case-based reasoning.
A canonical statement of case analysis in the sentential calculus is:
"If a statement P implies a statement Q, and a statement R also implies Q, and either P or R is true, then Q must be true."
Read more about this topic: Case Analysis
Famous quotes containing the words connections with, connections, logical and/or principles:
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—Elizabeth Janeway (b. 1913)
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—Anica Vesel Mander, U.S. author and feminist, and Anne Kent Rush (b. 1945)
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Is the affair of logical lunatics.”
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—Elaine Heffner (20th century)