This issue of Six Signals comes to you just two days before the autumnal equinox, so if you live in the Northern Hemisphere, your days have been and will continue to be getting shorter. It seems the news is following suit: we had a hard time finding a balance of light and dark this week, but between using an ancient ritual to confuse a self-driving car and the discovery of proto-sex in a Minecraft-like game for kids, we hope we got close. Read on for lots on Facebook and a compelling deep dive into delivery work.