This was literally the definition of a black swan event: "an event that comes as a surprise, has a major effect, and is often inappropriately rationalized after the fact with the benefit of hindsight"
No, Japanese authorities and TEPCo knew tgat earthquakes and tsunamis could happen, and usually together. They planned for it, they simply planned insufficiently, so quite the opposite of a black swan.
troupo|2 years ago
hef19898|2 years ago
hef19898|2 years ago