|And if you swim near the pumps, you'll get to visit all of Bristol|
|Like my wrap-around mirror shades?|
As we were returning to our point of departure after an hour, I could neither see our car nor recognise that strange pumping tower ahead. I speculated:
'This circular walk has an odd, helical topology - as you progress around you slip into an alternate universe, one which happens to lack our original car park."Clare was quick to pooh-pooh this suggestion - and within the next few yards I could see that I was in fact mistaken.
That, and the linearity of quantum mechanics.