Anchor: What he may not realize is that we really didn't know how to measure output in a medium-tech industrial economy, either.
Entailed: We haven't figured out how to measure the output of an industrial economy that uses medium-tech just yet.
Contradiction: He knows that we haven't yet figured out how to measure the industrial economy's output.
Contradiction: The person in shorts is running.
Contradiction: Two women are working.
Contradiction: His wrist was uninjured.
Contradiction: The female is holding a cigarette.