Ooh, this is hard for me. I am not good with words.
Right. I am interested in quantum physics and the whole idea of time and in this book the aliens see time in a completely different way. We are like people standing in the Grand Canyon with tin helmets on which are obscuring our view, only looking one way and not seeing the whole picture. The aliens can see the whole of the canyon, up, down, front and back, side to side. They see the whole picture. In the same way, they do not focus on death as it is one moment from a life. They say why focus on that small bit, when we should see the whole picture. It's that suggestion that all of time is happening 'at once' and not in a linear way as we perceive it.