THE longer François Hollande spends in office, the more it takes sharp eyesight and a clear head to follow his economic policy. Since his election last May, the Socialist president has mixed tax-and-spend measures with efforts to improve competitiveness. The rich feel squeezed; firms are annoyed by anti-business talk. Yet,with GDP shrinking in the fourth quarter of 2012 and job losses mounting, the man elected on a leftist programme is accused of a swerve to the reformist center. What is Mr Hollande up to?In his first few months he ticked off items on his manifesto. He lowered the pension age for certain workers. He raised a family benefit. He capped petrol prices. He vowed to stop companies closing factories. He prepared a budget for 2013 that tried to keep the budget deficit to 3% of GDP, but chiefly through tax increases: it soaked the rich with a 75% income-tax rate, and hit companies and individuals with other higher taxes. Returning from his summer break, Mr Hollande seemed like a man with the luxury of time on his side.What followed in October was, therefore, sprung on an unsuspecting public. After a damning report on French competitiveness by Louis…