Tautology (logic)

In logic, a tautology is a statement containing more than one sub-statement, that is true regardless of the truth values of its parts. For example, the statement "Either all crow

Crow

The true crows are in the genus [i] Corvus [i]. ...

s are black, or not all of them are," is a tautology, because it is true no matter what color crows are.

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In logic, a tautology is a statement containing more than one sub-statement, that is true regardless of the truth values of its parts. For example, the statement "Either all crow

Crow

The true crows are in the genus [i] Corvus [i]....

s are black, or not all of them are," is a tautology, because it is true no matter what color crows are.