I understand that space might be made up of individual units, such that you can't have a location which is between two units. When moving, a particle would just "pop" into the next unit repeatedly instead of smoothly moving - like how a computer screen works with pixels. Do I understand that at least somewhat correctly? Ok, so let's consider a particle in Cell A which is moving, eventually to reach Cell B. What is keeping the particle in cell A from moving instantly to B? In other words, what is going on in that cell that determines how long the particle must stay there before it moves to Cell B? How does Cell A "know" the velocity of the particle so that it can allow the particle to continue to Cell B at the correct time? What is keeping track of how long the particle is in Cell A? Could you take a snapshot of the universe and by looking into Cell A, be able to tell how soon the particle would move? Hopefully you can see what I'm getting at. Is it building up some kind of tension which must reach a certain threshhold before breaking? How does that work? Does it gradually exist in B while gradully disappearing from A? Also, if you have to be in a certain cell, doesn't that mean you know the location and thus cannot determine the velocity at all?