Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
The principle of contradiction is a fundamental concept in formal logic that states that a proposition cannot be both true and false at the same time and in the same sense.
Related terms
Law of Noncontradiction: This law states that something cannot be both true and false at the same time.
Logical Consistency: Refers to ideas or statements being free from contradictions or conflicts.
Although not directly related to formal logic, it explores how individuals feel uncomfortable when holding contradictory beliefs or engaging in conflicting behaviors.