Long reads 7 January 2014 Now you see it, now you don’t: what optical illusions tell us about our brains Illusions can offer insights into how the visual system processes images. By Ian Stewart Maurits Escher: where do the staircases lead? Subscribe to The New Statesman today from only £8.99 per month Subscribe Content from our partners An old Rioja, a simple Claret,and a Burgundy far too nice to put in risotto New Statesman Wine Club Antimicrobial Resistance: Why urgent action is needed Spotlight The role and purpose of social housing continues to evolve Spotlight