«The
probability of this
occurring is hard to calculate, primarily because
of the possibility
of what are called common - cause
accidents, where the loss
of off - site power and
of on - site power are caused by the same thing.
For an injury claimant to succeed under the Occupiers Liability Act, she must prove on the balance
of probabilities that the landlady was an occupier
of the premises where and when the
accident occurred, that the landlady breached a duty
of care owed to the claimant that the landlady's breach caused the claimant's injury, and that the plaintiff suffered a loss.