Personality tests, tests of character and knowing how to cheat. Josie Long presents stories of people testing their mettle. The writers Ross Sutherland and Joe Dunthorne examine the Sutherland-Dunthorne luck index to see why one's success seems to mean the other's failure. James Acaster embarks on a quest in search of connection and oversized novelty letters, and we hear the story of two men who knew how to deceive the people examining them. The Wow Scenario Featuring James Acaster Project Alpha Featuring Mike Edwards Produced by Claire Crofton The Sutherland-Dunthorne Inverse Proportional Luck Index Featuring Joe Dunthorne and Ross Sutherland Series Producer: Eleanor McDowall A Falling Tree production for BBC Radio 4.