  The recent paper (Science 382, 907 (2023)) is devoted to measurements of shot
noise to probe excitations in nanowires of the heavy fermion (HF) metal $\rm
YbRh_2Si_2$. The authors observed that shot noise is strongly suppressed, and
claim that the suppression cannot be attributed to either electron-phonon or
electron-electron interactions in a Fermi liquid. Their observation suggests
that the current is not carried by well-defined quasiparticles in the $\rm
YbRh_2Si_2$, and calls for similar research into other strange metals. In this
comment, we show that it is unlikely that the affected carriers in bulk $\rm
YbRh_2Si_2$ would have undergone any fragmentation.
