Matt Damon gets small in Alexander Payne's fascinatingly muddled sci-fi satire 'Downsizing'

There’s a moment late in Alexander Payne’s science-fiction comedy “Downsizing” that balances a gentle burst of heartwarming sentimentality with a precisely timed comic jab. You’ll know it when you see and hear it — the sweet-and-sour combo is something of a Payne specialty — and you may wonder,...