Catastrophes will always integrate those poor choices into massive death and destruction, and demonstrate past poor choices to the survivors. If any wit survives in a society, they will amend their ways, and the systems that select their destiny. It will always remain a dangerous world, even though, mercifully, day to day, we are insulated from this harsh reality.
We see this ignorance displayed in many human systems. It is compellingly obvious in the conflict between science and engineering versus raw political will. NASA "command and control" ignores or minimizes engineering facts to "attain" goals in order to aggrandize political hacks. Leads to predictable conclusions.
Societal spending priorities are partially set by arrogant, self-centered (POS) morons like Senator Byrd, apparently based on obtaining his personal name recognition on a bridge, statue, or rock monument, rather than on any lasting or even current value to the electorate. And the disinterested, or overwhelmingly ignorant electorate keeps returning this moronic POS to office.
Without any substantiation, I'll bet that more was spent annually on NO Mardi-Gras celebration than was ever spent on insuring this under sea-level city was assured to be safe from flooding from the sure-to-happen, "50 year" cat 5 event.
I'm pretty interested in findng those Mardi Gras numbers. You're probably right.