In this part, we are going to move away from the tedium of proving everything with truth tables, going towards handy rules of inference. Think of these as shortcuts when trying to find out if someone’s statements make sense.
The purpose of this two-part primer is to introduce you, the reader, into the wonderfully complicated and interesting world of logic, the language which every internet intellectual claims to know so much about.
There are three truths which must be accepted at the beginning of any investigation into the problem of knowledge and truth:
The First Fact: The fact of our existence. "I exist."
The First Principle: The principle of contradiction. "A thing can not be and not-be at the same time in the same respect."
The First Condition: The essential capability of the mind to know truth. "My intellect can reason and discover truth."