Richard Linklater’s Boyhood is both an aesthetic and logistical triumph. That it exists at all is a victory of sorts, considering the (much-hyped) eccentricities of its production. The film is an impressionistic time-lapse of human development, charting the growth of a young Texan boy from primary-school to college age and the evolution of his surrounding family. To achieve an honest chronicle of this temporal stutter effect, Linklater returned to the small troupe of actors every year or so for eleven years to shoot a handful of scenes, guessing ahead and developing the narrative on the fly. In a neat folding…