When you work in a bookshop, you can usually tell when a fellow bookseller comes in. They’ll be the ones subtly straightening all your book displays and re-imposing alphabetical order on the poetry section.
If they work for a bookshop chain, you may hear them utter the words “staff discount” at some point to their friend, before walking out empty-handed.
In 2015 and 2016, a strange fever overtook the UK public. Vital everyday activities such as sleeping, cooking and re-tweeting were usurped by a new phenomenon: Adult Colouring.
Perfectly sane individuals found themselves reaching for the crayons, and spending huge amounts of time hunched over increasingly intricate patterns, themes, motifs and the occasional fractal.