Five things we're all wondering about ... Nobel Prize-winning laissez-faire economist criticises Donald Tsang Yam-kuen's policies ... the chief executive replied: 'How would you like a negative intervention on your face?' Martin Scorsese's The Departed ... it didn't depart much from Infernal Affairs. Hong Kong is one of the world's safest cities, but is highest in consumer fraud ... in other words, you can trust us with your life, but not your wallet. Marathon sponsor calls course 'soulless' ... is he looking for something more heel-ing? Or does Standard Chartered boss Peter Sullivan think because he is foot-ing the bill that he can get away with bad arch-ing puns? Woman keeps 'rat paradise' in apartment ... we can also think of a few restaurants that are 'cockroach heaven' in the world's safest city.