At a new cafe in Shoreditch in London that made the headlines a few weeks back, you don't pay for your coffee or the Wi-Fi; instead, you pay just to be there, at a rate of 3p per minute. Doubtless this innovative approach will go down well in the vicinity of what I believe we're now supposed to think of as Britain's new technology hub, aka the Old Street roundabout. But a pay-per-minute cafe would put me on edge. Being conscious of how my money's dribbling away is the exact opposite of the mindset I hope to achieve while sipping a latte. My goal is to forget the passage of time, however briefly – not to be reminded that the sooner I leave, the more I'll save.