A more thorough explanation:

Definition: Nondirection refers to the failure of a judge to properly instruct a jury on a necessary point of law.

Example: In a criminal trial, the judge fails to instruct the jury on the presumption of innocence, which is a necessary point of law. This is an example of nondirection.

Explanation: Nondirection occurs when a judge fails to provide the jury with the necessary instructions on the law that they need to properly make a decision. In the example given, the judge did not properly instruct the jury on the presumption of innocence, which is a fundamental principle of criminal law. This failure could lead to an unfair trial and a wrongful conviction.