I was just out for a late night walk. This September has been unusually warm, and I need the exercise. Walking, for me, is almost a form of meditation. While my body moves with its own automatic rhythm, my thoughts flow freely. I lose track of time.
Something made me look up at the sky for a split second. I saw stars, and looked at the road again, but something felt wrong. Fundamentally wrong. My subconscious was feeding me a sense of dread, as if I had seen something impossible happen. This confused me; I had just seen stars?
I stopped and peeked at the starry sky again. Then I saw it. One of the "stars" was in fact a high flying plane, slowly moving across the sky, too slow to be noticeable but too fast to be anything else than a plane. Somehow, my subconscious had registered this subtle movement and interpreted it as wrong, because stars don't move.
It is amazing how the subconscious can filter the enormous amounts of sensory information we take in every day, and only pass on the relevant part to the conscious mind. It makes me wonder how much we miss because it isn't weird or dangerous enough to be noticed.