The last few of these things have been quite serious, so let's mix it up a bit with some spurious nonsense. And what better way to do that than to invite Sarah Manavis back on, to answer a question I've been pondering for a while: why, exactly, does she hate London, the city in which she has chosen to live?
This takes a while, because she keeps banging on about her dog.
To mix things up a bit, we also have our regular Ask The Experts slot with Paul Swinney of the Centre for cities. This week: why are exports so important to cities?