CONTRADICTION

1. In dialogue, a contradiction emerges when a first turn  of speech is not ratified by the partner’s next turn.
Emerging contradictions can be resolved on the spot through a series of adjustments and arrangements, playing with the margins of indeterminacy and windows of opportunity left by ordinary language and actions.
The contradiction is open when both parties produce oppositional (anti-oriented) turns of speech. When the opposition is thematized and ratified by both participants, an argumentative situation arises.

See Disagreement; Argumentative Question; Stasis;
Denying; Refutation; Counter-argumentation.

2. Contradiction in speech: ;Ad hominem; Consistency;  Absurd.

3. Contradiction between terms, see opposites.

4. Logical treatment of contradiction: Non-contradiction principle;
Propositions contrary and contradictory.