<s>[INST] Problem 1: Use the chain outcome to justify Experiment 5 along the right and \(down\) (\(x\) first and _then_\(y\)).
Solution: Recall that we justified Experiment 4 as follows:
Originally, \(C\cap D\) isn't a good bottom event, since some outcomes belong to \(C\cap D\) and some don't. But suppose we know the result of asking \(C\)?[/INST]