  We consider a toy model for non-local quantum correlations in which nature
resorts to some form of hidden signaling (i.e., signaling between boxes but not
available to the users) to generate correlations. We show that if such a model
also had memory, the parties would be able to exploit the hidden-signaling and
use it to send a message, achieving faster-than-light communication. Given that
memory is a resource easily available for any physical system, our results add
evidence against hidden signaling as the mechanism behind nature's non-local
behavior
