What is the origin of the idiom "the jury is out" and when to use it?

The origin of the idiom "the jury is out" can be traced back to the legal system, specifically to jury trials. In this context, after the presentation of evidence and arguments, the jury would retire to deliberate and reach a verdict. During this deliberation period, the jury would be "out" of the courtroom, away from the public eye, and engaged in discussions to determine the outcome of the case. It is commonly used in discussions, debates, or evaluations where a definitive conclusion or judgment has not yet been reached.