Information is not always correct.
Sometimes two pieces of information contradict each other.
The conclusions we draw from the information may also be false.
Doing a CO & FCo means looking for contradictions and false conclusions.
Contradiction (CO): There are two points. The second point contradicts the first point. Both cannot be right at the same time.
Example: December 21st is the shortest day of the year in the Northern hemisphere.
December 21st is the longest day of the year in the Southern hemisphere.