51% is the idea behind this standard: not absolute proof, just enough evidence to show something is more likely true than not. The phrase comes out of old English civil courts, where judges needed a lower proof standard for money-damages disputes than for criminal cases. Instead of requiring proof beyond a reasonable doubt, civil courts asked which side's evidence carried more weight.

Today in West Virginia, this is the usual standard in injury lawsuits after a case is filed. If someone claims a driver lost control on black ice, a chemical plant exposed workers, or a property owner ignored flood or slide hazards, the judge or jury decides whether the evidence tips in that person's favor. Not by a mile - just enough to be more convincing than the other side's version.

Practically, that means claims are often won or lost on details: crash photos, treatment records, weather reports, maintenance logs, 911 calls, witness statements, and expert opinions. When fog, flash flooding, rock slides, or icy bridges are part of the story, those facts need to be documented early, before records disappear or conditions change.

This standard also connects to comparative fault in West Virginia. Even if an injured person proves the other side was mostly at fault, the defense may still argue the person shares some blame. That can reduce what is recovered in damages, so the evidence has to cover both fault and the full extent of the injury.