Quantized spacetime could be an infinite ocean of virtual pairs of points, one point traveling forward an elementary unit of time and the other traveling backward an elementary unit of time, the share their time and disappear, with both an elementary unit of distance apart. Randomly blinking virtual pairs of points would make spacetime move in integral jumps of the elementary unit of time and integral jumps in the elementary unit of distance, thus quantizing spacetime, the points are spacetime.
An unpaired point, say a -, would have no partner, so it would last and be able to share time with any + point from any close pair. Both would disappear leaving the – point from the close pair as the new unpaired point an elementary distance unit away, then share time again and again the same way each in the elementary unit of time, and zips around randomly at the speed of light creating the matter wave and matter.