The predict earthquakes are just part of our work. These are things that are real, though they may at first glance appear to be anything but. It can be tempting to assume that “improbable” implies more than that—implies bad or good, worthless or valuable, trivial or important. Something can be bad in some respects and good in others. Improbable is, simply, what you don't expect. We can also predict tsunamis and volcanic explosions.