A more thorough explanation:

The term “unreasonable” refers to any action or result that goes beyond what is considered reasonable or common sense. In legal cases, it is often used to determine liability or the validity of evidence.

Criminal Cases: In a criminal case, if the evidence presented by the prosecutor is not clear enough for the average person to understand and agree with, it would be considered unreasonable. For example, if the prosecution claims that the defendant committed a crime without providing any evidence to support their claim, it would be unreasonable to expect a conviction.

Tort Cases: In a tort case, a reasonable person is used as a standard to determine liability for negligence. For example, if a driver fails to stop at a red light and causes an accident, they would be considered negligent because a reasonable person would have stopped at the red light.

Search and Seizure: An unreasonable search and seizure is one that goes beyond what is constitutionally protected. For example, if a police officer searches a person's home without a warrant or probable cause, it would be considered unreasonable because it violates the Fourth Amendment.

These examples illustrate how the term “unreasonable” is used in legal contexts to determine liability, validity of evidence, and constitutional protections.