Economy 3 April 2012 Opinionomics | 3 April 2012 Must read comment and analysis, including a debate over risk aversion in financial regulation. Is th Print HTML 1. Evidence of Nominal Wage Rigidities (Mark Thoma) Everyone in economics knows one thing: Wages are sticky. It's hard to cut them. How hard? Thoma finds the evidence. 2. What happened at Groupon? (Felix Salmon) Felix suggests one reason – beyond their borderline Ponzi-scheme accounting – why Groupon may be having problems 3. Welcome to Ikea-land: Furniture giant begins urban planning project (The Globe and Mail) Ikea is building a ten-acre housing development in the Olympic Park in London, which will be an all-rental private neighbourhood. 4. The FDA approach to regulation (Economist | Free Exchange) A.C.S. argues that the desire to make the SEC more like the FDA is mistaken... 5. Default Rules and Regulatory Agency Design (Slate | Moneybox) ...While Matt Yglesias disagrees. › Email surveillance: the political fallout begins Is the FDA a good model for financial regulation? Credit: Getty Images Alex Hern is a technology reporter for the Guardian. He was formerly staff writer at the New Statesman. You should follow Alex on Twitter. Subscribe More Related articles George Osborne's mistakes are coming back to haunt him The changing world of work Is Kezia Dugdale's tax rise the beginning of an honest debate about tax?