論理

解説

付記

大前提：六十人なら一人の六十倍速く仕事ができる。 小前提：一人が六十秒で穴を掘れるなら―― 結論：六十人なら一秒で穴が掘れる！ これは「算術三段論法」と呼ばれるもので、 論理と数学を組み合わせることで二重の確実性を得る―― ありがたい理屈である。

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Original

The art of thinking and reasoning in strict accordance with the limitations and incapacities of the human misunderstanding. The basic of logic is the syllogism, consisting of a major and a minor premise and a conclusion—thus:

Additional notes

Major Premise: Sixty men can do a piece of work sixty times as quickly as one man. Minor Premise: One man can dig a posthole in sixty seconds; therefore— Conclusion: Sixty men can dig a posthole in one second. This may be called the syllogism arithmetical, in which, by combining logic and mathematics, we obtain a double certainty and are twice blessed.