# At the smallest level, how do things move?

When we see something moving on a screen it's usually just pixels being turned off at one location and turned on at another. For example:

This would render a dot moving from A to C.

Turn on pixel A, Turn off pixel A, Turn on pixel B, Turn off pixel B, Turn on pixel C

In a real world scenario - how do things actually move? How does the tiniest physical space get covered?

There must be a tiniest physical space right? If not then from my reckoning we shouldn't move at all. To move 1 step forward I'd have to first move half a step, but before that I'd have to move a quarter of a step, before that an eighth, etc. I would always be moving forward but I would never reach 1 full step.

So assuming there is a tiniest physical space, does matter get turned off at point A and on at point B etc?

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Possible duplicates: physics.stackexchange.com/q/9720/2451 and links therein. – Qmechanic Apr 12 '13 at 23:59
@Qmechanic I'd say this is primarily about motion rather than discrete / quantized space. I think there is something to be gained by this question that wasn't covered the question you linked. – Brandon Enright Apr 13 '13 at 0:24