Imagine there where only two atoms in the universe. One of them starts moving. For the beholder there is no way of telling what atom is moving. They are moving towards each other or away from each other that's all.
Now Imagine you walking to work. From one perspective, you you are moving through the world. From another- the entire rest of the universe is moving towards you.
Or as St Hannah put it: "This proves that there is both a free will and destiny at the same time."