Obversion

Obversion is kind of like flipping a sentence over, like how you sometimes flip a pancake in a pan. It helps us to understand relationships between ideas in a sentence.

Let's say we have a sentence like: "All dogs have four legs." If we obvert it, we simply change the quality of the sentence and the subject (the thing the sentence is about). So, "All dogs have four legs" would become "No dogs do not have four legs".

Similarly, if we have a sentence like: "Some cats are black", we can obvert it to "Some cats are not not black".

By obverting a sentence, we can look at the relationship between the subject and the predicate, or what the sentence is saying about the subject. It helps us to simplify and clarify ideas, so we can understand them better.