text_a: the director 's twitchy sketchbook style and adroit perspective shifts grow wearisome amid leaden pacing and indifferent craftsmanship -lrb- most notably wretched sound design -rrb- .
text_b: this is as powerful a set of evidence as you 'll ever find of why art matters , and how it can resonate far beyond museum walls and through to the most painfully marginal lives .