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
A flawed line of reasoning refers to a logical error or fallacy in an argument that weakens its overall validity. It occurs when the reasoning used to support a claim is faulty or lacks sufficient evidence.
Related terms
Logical Errors: These are mistakes in reasoning that lead to invalid conclusions or faulty arguments.
Also known as post hoc ergo propter hoc, this fallacy assumes that because one event follows another, the first event must have caused the second event.