Were the 2018 Gatwick drones real?

In December 2018 Gatwick Airport shut down. 109 eyewitnesses reported sighting 170 drone flights over the airport. All flights were grounded, and the nation braced for a terrorist attack. But what if those sightings weren’t real but instead an imagination caused by expectations? In today’s episode with award-winning science journalist David Robson, we explore the science of the expectation effect.…