Comment on ``Measurement of the ${}^3$He mass diffusion coefficient in superfluid ${}^4$He over the 0.45--0.95 K temperature range

S. K. Lamoreaux, R. Golub

The role of 3He-3He collisions in our diffusion experiment is addressed and shown to not be relevant to the measurement of 3He diffusion against phonons in superfluid helium.