The Scottish writer David Keenan has published five novels in five years: This is Memorial Device (2017), For the Good Times (2019), Xstabeth (2020), last year’s magnum opus Monument Maker and now Industry of Magic & Light. At a comparatively modest 250 pages (Monument Maker weighed in at more than 800), it is practically a novella, or perhaps the sort of pamphlet one might once have picked up in a ‘head shop’ such as Compendium Books in Camden.