The Law of Excluded Middle is a fundamental principle in classical logic stating that for any proposition, either that proposition is true or its negation is true. In simpler terms, it means that there are no middle states between being true and being false. For example, if we consider the statement "It is raining," it must either be true (it is raining) or false (it is not raining). This law is essential in various fields, including mathematics and computer science, as it helps in constructing logical arguments and proofs. It contrasts with other logical systems, such as fuzzy logic, where propositions can have degrees of truth.