Guardian: The problem is simply stated. As Gordon Brown – discussing what he perceives to be an improvement in his political fortunes – says, “an hour is a long time in politics”. It used to be a week, but everything is speeding up. To remain in office or to remain in business, decision-makers must privilege the present over the future. Discount rates ensure that investments made today are worth nothing in 10 years’ time; the political cycle demands that no one looks beyond the next …