I do have something that has puzzled me for a few years now. One morning as I walked the long walkway going to visit my mother, I was able to study a couple walking in front of me. I judged them to be in their early forties. The were just linking hands as they walked along. They crossed the dual carridgeway in front of me as we all came out of the walkway and I had to wait for a car before I could cross. I watched them as they looked down the path, bounded by a hedge, that I was about to go down too. It was a Sunday morning and no one else appeared to be about.
I took my eyes off them as I crossed the road but fully expected to see them walking the path I was about to go down. They were not there. They should have been even if they were running at full speed. I would have seen them if they had gone to the right or left and not down the path. They were just gone.