Two cases in this chapter, transatlantic finanncing and bernina distributors, involved very different facts but similar issues of law. What legal issues do they have in common? In each case there is some unexpected supervenig event that interferred with one party ability to perform and with their expectations in the contract. In either case, did the nonperforming party ha ve a legally regonized "excuse fot nonperformance? why or why not? while you might have to wait until a later chapter for a full answer, how do you think parties to a contract might dela with these uncertainties in advance?