I couldn’t work out how I would get to my office across the flooded swamp of campus. The assistant dean appeared to be leading us one way, but just behind us his younger self (plus wife and three children) was issuing a different set of directions. How extraordinary that my colleague’s powers included time travel!

Perhaps it would just be more profitable to play in the abandoned blue truck, or sit through the West End musical that we could hear blasting out from the theatre across the street?