Every year, thousands of tourists pass through Hawaii Volcanoes National Park, and many collect sand or rocks as souvenirs. And every year, thousands of people mail them back, reporting mysterious misfortunes: “Please return to soil. I have been having bad luck.” “Ever since we have taken items, we have had nothing but back luck and […]
You are to choose exactly one of two opaque boxes, A and B. A mean demon has put $1,000 in the box he predicted you would not take and nothing in the other. Since you know that the predictions are quite reliable, you can be sure you will pick the wrong box. … [Now suppose] […]
Flamdor McSqueem is a superintelligent wombat from the planet Zortag. He shows you two boxes. You can choose to take the contents of Box A or the contents of both boxes. He has privately predicted what you will do. If Flamdor predicted you would choose Box A only, then Box A contains $1 million. If […]