Most people who have thought seriously about their dreams have had the experience at least once: something in a dream seemed to happen in real life shortly after. You dreamed about a car accident and then you had one. You dreamed about hearing from someone and they called the next day.
These experiences feel profound and are genuinely hard to dismiss. So what's actually happening?
What science says
The scientific consensus is that dreams do not have genuine precognitive power — they don't literally access information about future events. There are no controlled studies demonstrating that dreams can reliably predict events at rates above chance, despite many attempts to find this effect.
But the experience of precognition is real, extremely common, and psychologically interesting.
Why precognitive experiences occur
Confirmation bias and selective memory. We dream every night and forget most of it. When a dream image matches something that later occurs, it becomes vivid and memorable. The hundreds of dreams that don't correspond to real events fade without trace. We remember the hits and forget the misses.
Dreams process real information. Dreams synthesise everything you've been absorbing — news, conversations, patterns you've noticed, things people have said. A dream that seems to predict something may actually be the brain accurately extrapolating from subtle information it has already detected. This isn't magic; it's sophisticated pattern recognition.