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What is Formal Logic?

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Formal logic is the practice of deriving logical conclusions from premises that are known or assumed to be true.
There are several types of formal logic that each rely on different systems of translating statements in natural language into a formal representation. Once represented in a formal language, logic can be evaluated for correctness and used to infer conclusions.
No system of logic can represent all the nuances of natural language. As a result, informal logic can evaluate ideas that are out of formal logic's reach. For example, traditional logic is based on an excluded middle such that it can't consider partial truths and grey areas.
Overview: Formal Logic
Function
Definition
Formal logic is the practice of using inference to deduce conclusions from sets of premises.
Value
Determining the validity of an argument and deducing conclusions from what you know.
Related Techniques
Next: Excluded Middle

Logic

This is the complete list of articles we have written about logic.
Catch 22
Cold Logic
Common Sense
Educated Guess
Formal Logic
Fuzzy Logic
Informal Logic
Intuition
Limits Of Logic
Logic
Meta Examples
Premise
Reason
Reasoning
Thinking
True Opposite
Types of Logic
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