> They pick a year in the future - 2045, say - and ask: what should the national train timetable look like then, if we want to meet our national objectives as a

> They pick a year in the future - 2045, say - and ask: what should the national train timetable look like then, if we want to meet our national objectives as a country? They work out what a good timetable looks like in that future. Then they build backwards from there. A workback plan!