The CoLab in Athens is a sign of the times. A shabby grey building a short walk from the city’s becalmed shopping district, it is home to a clutch of fledgeling tech start-ups. The bright young things in jeans and T-shirts are housed in the otherwise drab former offices of a branch of the state bureaucracy that fell victim to Greece’s spending cuts. Underneath it sits a discount supermarket, the front window of which is plastered in adverts for items at €1 or less.