Kelly Reichardt makes movies that focus on the ordinary, telling stories of people navigating their unglamorous day-to-day lives, often as loners or outsiders. That might not sound interesting on the face of it, but it turns out there’s a strange kind of beauty in these lives that usually escape our notice. Sometimes Reichardt has bumped up against genres like the thriller, the period film, or the western, peeking at the reality underneath the form, while casually kicking the genres aside, like so much artistic collateral damage. This is once more the case in her new film, sarcastically titled The Mastermind,…