In the final scene of Richard Linklater’s indie epic, Boyhood (2014), Mason (Ellar Coltrane), the titular boy, hikes through Texas’ Big Bend National Park. It is the first day of college, the beginning of the next chapter in his life. Joined by new friends – strangers, really – Mason watches the sun set over limestone canyons. ‘You know how everyone talks about seizing the moment?’ a girl he’s just met asks. Contrary to common belief, she concludes, it is, in fact, the moment that seizes you. Slightly stoned, Mason has a quiet epiphany of the kind that comes so easily to teenagers but is slowly strangled as adulthood asserts its grip: ‘Yeah, I know, it’s constant. It’s like it’s always right now, you know?’ Meanwhile, also under the influence of…