Banana Eagle’s Alibi

Sara Bizarro
6 min readJul 12, 2023

Syllogisms, a New Mnemonic Device

This image was created by https://deepai.org/ with the prompt “Banana, Eagle’s Alibi” in Andy Warhol’s style and was chosen after several tries.
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A syllogism is a type of reasoning that always includes two premises and a conclusion. In a syllogism the premises are sentences such that they can be translated to what is called a “standard form” of a “categorical proposition.” What this means is the following, any proposition in a syllogism includes quantifiers, all, some, no, and copulas, typically words like are and are not. So a standard form of a categorical proposition would be:

All bananas are yellow

The quantifier here is all and the copula is are. Or you could say:

Some bananas are not yellow

In this case the quantifier is some and the copula is are not.

In general for any categorical proposition would have the form:

Quantifier / First Term / Copula / Second Term

In classical logic, there are four types of categorical propositions. These types include different combinations of the quantifiers and the copulas and are usually described with the letters A, E, I, O. The four propositions can be exemplified as follows:

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