§ 60-445 Discretion of judge to exclude admissible evidence.

A judge has the power to keep otherwise admissible evidence out of a trial if it would catch the other side off guard in an unfair way. This applies when one side didn't have a fair chance to prepare for that evidence and letting it in would cause real harm because of that surprise.

The judge has to weigh two things: how much the evidence actually helps prove the case, and how unfairly surprising it would be to the other party. If the surprise factor outweighs how useful the evidence is, the judge can block it. This gives judges a tool to stop one side from ambushing the other with evidence nobody saw coming, which helps keep trials fair for both sides.

This doesn't mean judges will throw out evidence just because it's surprising. The evidence has to be surprising enough that it's unfair, and the party who got surprised needs to show they had no real chance to prepare a response to it beforehand.