Quantum leaps in the sense of physics have nothing to do with the Planck length, or “smallest” units in any sense. Quantization isn’t about small (although in p

Quantum leaps in the sense of physics have nothing to do with the Planck length, or “smallest” units in any sense. Quantization isn’t about small (although in practice it is), but about discrete changes with no values “in between” transition. What makes a quantum leap a quantum leap, is that the energy levels an electron may occupy are not continuous. Incidentally, while it’s true that no current theory describes physics below the Planck length, it’s not true that said distance scale is somehow a limit on scale. It may be true that the Planck scale is the scale at which spacetime becomes “foamy” although it’s just a conjecture. It’s also possible that scales far below the Planck scale exist. We don’t know.