Defendant did not owe a duty of care to plaintiff to protect him from falling from a steeply slanted roof covered with broken, slippery clay roof tiles.  The roof’s danger was open and obvious.  It was not foreseeable that plaintiff, who was neither required nor invited to climb on the roof, would confront that obvious danger.  He did so while drunk and high on marijuana.  Under these circumstances, no duty of care was owed.