  In a recent paper, Robert Griffiths [Phys. Rev. A 107, 062219 (2023)]
analyzed a protocol for transmission of information between two parties
introduced by Salih et al. [Phys. Rev. Lett. 110, 170502 (2013)]. There is a
considerable controversy about the counterfactuality of this protocol, and
Griffiths suggested to resolve it by introducing a new measure of channel
usage, which he called "Cost". I argue that this measure is not appropriate
because the original interaction-free measurement protocol which triggered the
definition of the concept of counterfactuality is not counterfactual according
to this measure.
