Introductory Logic Unit One VHSG

Logic is...

• A concept with a precise meaning

• The art and science of reasoning well

• A statement that gives the meaning of a term

Arrange in the order of decreasing extension: animal, insect, beetle, living being, lady bug.

• insect, beetle, ladybug, animal, living being

• ladybug, beetle, insect, animal, living being

• living being, animal, insect, beetle, ladybug

The law of identity means...

• Any statement is either true or false

• If a statement is true it is true

• A statement cannot be both true and false

What are the three laws of thought?

• Law of identity

• Law of the excluded middle

• Law of non-contradiction

• Law of the jungle

What is the error in this definition? To fly-when you soar above the earth.

• too ambiguous

• uses a negative

• doesn't use the same part of speech

• uses figurative language

Arrange in order of increasing intension: Ancient language, classical Latin, communication, Latin, language.

• Ancient language, classical Latin, communication, Latin, language

• classical Latin, Latin, ancient language, language, communication

• communication, language, ancient language, Latin, classical Latin

Extension means...

• The sum of the common attributes of a term

• The sum of all the individual objects to which a term applies

• The ability to see up close

What is A?

• Pear tree

• Evergreen tree

• Firewood

What is A?

• Cars

• Trucks

• Vehicles

A genus is...

• a broad category of terms

• a specific category of terms

• a really smart person