Thank you. I have been able to read the entire thread and (barely) keep up with it. I started this thread in order to keep from distracting from the focus of that thread.
I realize that people have a sense that how things are is how they have been and how they will be. However, the people who design and establish the emergency procedures for nuclear power plants must look beyond their comfort level in planning. According to documents cited in the thread you link to they have done so. This situation presented unique problems with a very
short window of opportunity for action. Given that those responsible for responding cognizant of the consequences (I an confident that they were) there is more inertia in the response than I can understand.