According to quantum theory, a point of matter doesn’t sit at a fixed point but trembles about its quantum distribution. Schrödinger deduced this quantum fuzziness from the Dirac equation and he called it zitterbewegung. Point matter is then indeed at a point but not always the same one, like a dot constantly redrawn by a painter whose hand trembles, so it appears as a fuzzy patch.
Light advances every quantum cycle at about 1043 times a second so it moves about 300 million meters in a second. If matter moved like this, rockets could go to the moon in about a second, but it can’t. Matter restarts as often as light moves but can’t teleport every time, or it would have no life, so matter trembles slower than light moves.
Even so, atoms constantly jiggle about at what is to us a fantastic rate, so why don’t they constantly move as light does? The answer lies in the quantum distribution they move within. If that distribution is symmetric, or equal in every direction, these tiny movements just cancel out, so quantum trembling itself doesn’t make matter move.
Yet that matter particles constantly jitter about means they don’t have to be pushed to move. Inert matter only moves when pushed, but in quantum theory, matter is always moving already, just equally in every direction. It follows that if the distribution around matter becomes asymmetric, it will tremble one way more often to cause macroscopic movement in our time. Matter can then move due to distribution changes that bias its inherent trembling, but what could cause that?