There's that thing where what we see when we look up at the sky are things from the past. Things that have already transpired that we are only now witnessing. And then looking around in immediate space, it is the same. There is a delay while the senses collect and process the environment. And then the moments of anticipation - a child holding on to the rails at the top - where deep down we know what is about to happen has already happened and will happen again and now is the time for this body to slide.