Silly situation - who is liable?
Setting: Person A's house.
Person B brings an item and places it on a table.
Person C accidentally knocks Person B's item off the table onto the floor. Everyone is aware this has happened.
Person D carelessly trips on Person B's item on the floor; destroying the item and sustaining an injury.
This situation just happened - and luckily, nobody is actually injured, and nobody is suing anyone, we're all friends. Hypothetically though - who would be liable for person D's injury, and who is liable for the destruction of person B's property?