
An excerpt:
But the episode is sold on some excellent quick-and-dirty character development by scripter Joe Menosky. We see several sets of two people—the shaman and the guy making sacrifices, the protector and his erstwhile mentor, the two guys at the telescope, and the two astronauts—who create instant, lasting impressions. These are people we come to care about, even though they’re all dead within seconds of our encountering them.