““The Great East Japan Earthquake was said to be so large that it should only happen once every thousand years. I recall hearing someone say that our history from the year 0 through 2000 is the equivalent of twenty old ladies living to the age of one hundred. If that earthquake really was a once-in-a-thousand-years event, it would mean that two of those twenty old ladies would have been affected. Is that a high ratio or is it low?””