Generally, a landlord does not owe a duty of care with respect to open and obvious dangers on the property.  There is an exception, however, when it is foreseeable that, because of necessity or other circumstances, a person may choose to encounter the condition.  Here, the exception applied because the obviously dangerous stairway, with uneven risers and no handrail, led from the general living quarters to the only bathroom for the dwelling unit.  Summary judgment should not have been granted on lack of evidence of causation even though there were no witnesses to plaintiff’s slip and fall on the stairs and plaintiff had no memory of what happened.  A reasonable inference could be drawn from circumstantial evidence that the stairs were a substantial factor in contributing to plaintiff’s fall given their dangerous condition and the fact that plaintiff last remembered being in the middle of them before regaining consciousness on the floor at the foot of the stairs.