I think the nature author thought the same thing and then added a sentence at the very end, which sums up the rest they did not quite grasp (like me) and sound more like Dr. Who:
>Temporal interference and time reversal could lead to new ways of creating time crystals, which are mind-bending structures that repeat periodically, not in space — as ordinary crystals do — but in time. They could also help researchers build quantum computers based on photons.
