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Logic 1 Chapter 2
Memoria Press 2nd Edition for GRACE
Question | Answer |
---|---|
Two properties of Simple Apprehension | Comprehension and extension |
Comprehension | the completely articulated sum of the intelligible aspect of elements( or notes) represented by a concept |
Sentient | it has senses, such as sight, hearing |
Material | it has a body, rather than being purely spiritual |
Substance | it has something rather than nothing |
Plato's tongue-in-cheek definition | man is a "featherless biped" |
Porphyrian Tree | A diagram invented by third-century logician Porphyry, that breaks down complex concepts into simple concepts |
Complex concept | the concept before broken down by the tree |
Simple concept | the concept after broken down by the tree/ material, substance etc. |
Rational | Being able to distinguish between true and false; knowing right and wrong |
Notes | Simple concepts to define a complex concept |
Extension | The total number of individuals/things to which a concept extends or applies. |
What is a material substance? | It has a body. It is either living or nonliving. |
How do we ask what is the comprehension of a concept? | Ask the question "what is the concept?" What is a (man, animal, etc)? |
How do we ask what is the extension of a concept? | Ask the question, "To what does the concept 'man, etc' refer?" |
What is the relationship between comprehension and extension? | The greater the comprehension a concept has, the less extension it has; and the more extension it has, the less comprehension. |
The essence of a thing. | Comprehension |
The things to which the essence of something is applied. | Extension |
How many notes does "animal" have? | 4 notes: sentient, living, material, substance |
How many notes does "man" have? | 5 notes: rational, sentient, living, material, substance |
How many notes does "chair" have? | 2 notes: material, substance |