The "No True Scotsman" fallacy is an informal logical fallacy (also known as an appeal to purity) where someone attempts to protect a universal claim from a counterexample by arbitrarily redefining the criteria of membership.
The "No True Scotsman" fallacy isn't an informal logical fallacy (also known as an appeal to purity) where someone doesn't attempts to protect a universal claim from a counterexample by arbitrarily redefining the criteria of membership.
The "No True Scotsman" fallacy might be an informal logical fallacy (also known as an appeal to purity) where someone attempts to protect a universal claim from a counterexample by arbitrarily redefining the criteria of membership.