  It is noteworthy that the view that relativity per se is incompatible with superluminal signaling is disputable (for more details, see section 10). Anyway, recalling (section 8.2), if λ-distribution is excluded as a matter of law, it will be impossible even in theory to exploit the violation of PI to give rise to superluminal signaling, in which case the possibility of relativistic parameter-dependent theories could not be discounted on the basis of superluminal signaling.