  In the firewall proposal, it is assumed that the firewall lies near the event
horizon and should not be observable except by infalling observers, who are
presumably terminated at the firewall. However, if the firewall is located near
where the horizon would have been, based on the spacetime evolution up to that
time, later quantum fluctuations of the Hawking emission rate can cause the
"teleological" event horizon to have migrated to the inside of the firewall
location, rendering the firewall naked. In principle, the firewall can be
arbitrarily far outside the horizon. This casts doubt about the notion that
firewalls are the "most conservative" solution to the information loss paradox.
