Think about and discuss this statement. "The future becomes the past before we can experience the present". An example: while you may think you are reading this post in the present there is actually a measurable amount of time that passes between the time you look at the screen and the time you understand what is written here. You brain can only process info at a certain speed and the time it takes you to experience anything places the actual event firmly in the past. Even what you see is the past, due to the time it takes light to travel from what you are looking at to your eyes. The next time someone tells you to stop living in the past tell them you would love to, but it is not physically or temporally possible.