‘It works as well as it does because director Damián Szifron makes no attempt to separate his populist instincts from his intellectual ones’It only takes a single head-on collision of the mainstream and the arthouse to remind you how false that dichotomy really is. When Simon Cowell gave a surprise shout-out to Harmony Korine’s 1997 avant garde classic Gummo on a movie-themed episode of Britain’s Got Talent a few years back, I was left wondering why I’d chosen to compartmentalise my appreciation for the two.