Class act

From Edward Winfield
Of course it helps to be clever  if you want to be successful  (8 March, p 30), but knowing stuff only gets you a little way up the greasy pole. Basic cunning and knowing how to use the system  to your best advantage are  more helpful. It follows that the children of wealthy and successful parents have a significant advantage in knowing how to behave in social situations. I’m afraid the maxim that it is who you know, not what you know, does count. Winchester, Hampshire, UK From Jim Penman You left out one route to  success: lowering testosterone.  A multitude of studies have associated lower testosterone with success at work, as well as reduced levels of criminal and risk-taking behaviour. One way  to put this into practice might  be to restrict sexual activity in adolescence, a technique that  has been shown to lower testosterone in rats permanently. Montrose, Victoria, Australia