Evidence quality directly determines case outcomes, with strong documentation creating leverage for favorable settlements or verdicts. Clear liability evidence like video footage, multiple witness statements, and police reports citing the defendant significantly boost success chances. Medical documentation linking injuries directly to the accident through consistent treatment records and expert testimony proves essential. Photographs taken immediately after accidents showing conditions, injuries, and property damage provide powerful visual evidence juries understand. Documentary evidence like safety violations, prior complaints, or maintenance records can establish negligence patterns strengthening your position. Witness credibility matters enormously, with independent witnesses carrying more weight than friends or family members. Cases lacking physical evidence rely heavily on testimony credibility, making consistent statements throughout the process crucial. Evidence preservation starting immediately after accidents prevents crucial proof from disappearing or memories from fading over time.