Giles v. City of New Haven
Facts
The plaintiff had operated one of the Powell Building elevators for fourteen years when, during a routine ascent, the elevator’s compensation chain hooked on a rail bracket, tightened, broke free from bolts under the cab, and caused the cab to shudder and shake, injuring her. The defendant had a longstanding exclusive contract with the building owner to inspect and maintain the elevator and its component parts, and no one other than the defendant touched the compensation chain or its bolts. The defendant’s maintenance supervisor testified that routine inspections did not include inspection or testing of the compensation chain, that the chain had to sway far beyond normal to hook on a bracket, and that the chain and U-bolts had not been repaired or replaced for several years. The plaintiff testified that the elevator had been operating normally and that the chain crashed before she reversed direction.
Issue
Whether the plaintiff presented sufficient evidence to allow a jury to infer negligence under res ipsa loquitur, so that the trial court should not have directed a verdict for the defendant. More specifically, the question was whether the doctrine could apply despite the plaintiff’s operation of the elevator and possible contributory negligence.
Rule
Res ipsa loquitur applies when the event ordinarily would not occur absent someone's negligence and the evidence permits a reasonable finding that the defendant's inferred negligence was more probably than not a cause of the injury. The plaintiff need not prove the defendant's exclusive physical control or eliminate all other possible causes; it is enough that other responsible causes are sufficiently reduced so that the defendant's negligence is the most plausible explanation. In a comparative negligence jurisdiction, the doctrine applies even if the plaintiff's own negligence may also have contributed to the injury, with any plaintiff negligence addressed through comparative fault rather than as a bar to invoking the doctrine.
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If Nora sues Meridian for negligence and relies on res ipsa loquitur, which is the strongest argument against a directed verdict for Meridian?