Raja Gave a Widget to Northwest Storage

Essay

Raja gave a widget to Northwest Storage.Under the terms of the parties' contract,Northwest Storage was required to safely store the widget from October to April,and to then return it to Raja.The widget was in excellent condition when Raja delivered it to Northwest Storage,but it was badly damaged upon its return.A court has held that,on the facts,the burden of proof will be shifted.What does that mean? Which party will the court's decision favour? What is the policy justification for shifting the burden of proof?