Oh, how I love travelling light! My knapsack is ready for my two-day trip to Ljubljana early tomorrow morning: a bag of toiletries, a notebook and pen, two pairs of socks, a credit card, the last issue of The Economist, a Swiss Army knife, a bottle of fine Rioja, a box of condoms, a set of keys, a mobile phone, a windbreaker, and a wool hat. Yes, the passport and ticket, too, as well as one-hundred and fifty pounds in cash.