In every area of the world where there is earthquake risk, there are still many buildings of this type; it is very frustrating to try to get rid of them.

If one introduces the concept of energy of an earthquake then that is a theoretically derived quantity.

This is very similar to astronomy where different magnitudes are assigned to the brightness of an astronomical object, depending on the range of wavelengths being measured.

As seismologists gained more experience from earthquake records, it became obvious that the problem could not be reduced to a single peak acceleration. In fact, a full frequency of vibrations occurs.

Don't wait for extraordinary circumstance to do good; try to use ordinary situations.

I'm a tenured professor. But I'd get rid of tenure.