In a disaster like an airplane crash or ship sinking, there is never one single element that caused the disaster. Typically there are multiple contributing factors to things going tragically wrong. For instance, at Three Mile Island, the control room kept trying the wrong solution to fix the wrong problem.
For Puerto Rico, there are many elements that I've written about before:
- Deferred maintenance of the electrical grid
- The problem of logistics in disaster response
- A lack of planning and preparedness
- The "worst-case event" happening
- The population being impacted and not available for work
- Electrical power being the Achilles heel of the 21st-century economy
- Transportation challenges impacting everything else
- The timing of the disaster