I think not for distance and time. I’m not a physicist but Nima Arkani-Hamed phrases the minimal distance measurable as a physical process limited by QM and GR

I think not for distance and time. I’m not a physicist but Nima Arkani-Hamed phrases the minimal distance measurable as a physical process limited by QM and GR effects. To probe smaller and smaller distances one needs more and more energy, and past some minimum distance the energy becomes so great your experiment collapses into a black hole. That’s just what QM (small wavelength->high energy) and GR (force of gravity compared to the other forces, enough energy and gravity dominates) tell us. Since energy is related to time by a symmetry I think minimal time is implicated in the same way. A better interpretation than minimal discrete values of the universe is we are butting up against experimental limitations. An old concept that doesn’t necessarily mean the world is limited in the same we way are.