  In this essay, we examine the implications of the ongoing black holes vs.
firewalls debate for the thermo-field dynamics of black holes by analyzing a
CFT in a thermal state in the context of AdS/CFT. We argue that the themo-field
doubled copy of the thermal CFT should be thought of not as a fictitious
system, but as the image of the CFT in the heat-bath. While this idea was
proposed earlier by Papadodimas et al., our following conclusions differ from
theirs. In case of strong coupling between the CFT and the heat-bath this image
allows for free infall through the horizon and the system is described by a
black hole. Conversely, firewalls are the appropriate dual description in case
of weak interaction of the CFT with its heat bath.
