“The Hottest August” (2019). Cast: Clare Coulter (narrator). Director: Brett Story. Web site. Trailer. What does the future hold? That’s a question many of us ask ourselves often, both individually and collectively. But how wide a view do we take when answering it, again, either individually or collectively? That’s a subject addressed in the experimental new documentary, “The Hottest August.” It probably doesn’t come as much of a surprise that, when we contemplate the future, we usually do so in terms of how it most directly affects us as individuals or in our peer groups. We think about our homes, our families, our communities, our professions and so forth, the aspects of our lives that have the most immediate impact. [...]