Human beings -- not technology -- are the scariest things in 'Black Mirror's' Season 4

SPOILER ALERT: This piece contains extensive spoilers for the new season of "Black Mirror." "Black Mirror," and its creator Charlie Brooker, are sometimes spoken about in terms of prophetic ability. That 2011 episode about a prime minister and a pig resonated in the real world. There's "The Waldo Moment," which generated viral headlines crediting the episode with predicting President Trump's rise to power. And then there's "Nosedive," the episode set in a world where a person's life depends on their rating out of five on a social media app -- enter China's idea for a "social credit" system.