What does contradict have to do with saying or speaking?

"Contradict" itself doesn't necessarily *have to do* with saying or speaking. It refers to the act of opposing or disagreeing with a statement, idea, or action.

However, contradiction is often expressed through speech or writing. This is because:

* Contradiction usually involves verbal communication: To contradict someone, you typically need to state your opposing viewpoint.

* Contradiction requires a statement to be opposed: The very act of contradicting implies that someone has said something that you disagree with.

Here are some examples:

* "He said the sky is blue, but I contradicted him by pointing out that it can also be gray or orange."

* "The two witnesses contradicted each other's accounts of the accident."

While you can contradict actions or ideas without directly speaking, the most common way to contradict is through verbal communication.