I’ve managed to get to Norwich now, but Mercury House isn’t there. I can vaguely remember someone saying the team had moved in the year before I joined the project. That would mean they started using it in 06. Maybe it was a new building when they took it over. That’s all I can assume. Obviously I didn’t turn up in 05 and tell them that something went wrong with the test in 08 – or else they wouldn’t have gone through with it (or would they, and just not told me?). That’s the thing about paradoxes.