Psychologists believe that intuition is fueled by pattern-matching; the mind combs through experiences we've stored in our long-term memory for similar situations and presents in-the-moment judgments based on them.
Even Albert Einstein relied on it. "I sometimes feel that I am right. I do not know that I am," he told The Saturday Evening Post in 1929. It's much better to trust those instincts and test them later than to dismiss them out of hand, he said.
But Reddit user ElectroIsland was interested in how we approach it when the stakes get higher, so they asked everyone on the platform to share the scariest "We need to leave, now" gut feelings they've ever experienced. Here are some of the most upvoted stories they have received.