I remember that when I was growing up, seismologists were telling us that there would be a really big quake any day now. Decades later and they're still saying

I remember that when I was growing up, seismologists were telling us that there would be a really big quake any day now. Decades later and they're still saying the same thing. There have been some significant quakes in the meantime, but not the huge one that has been continuously predicted. The seismologists are probably right, but it's really difficult to accurately predict the timing of earthquakes. The earth will sit around doing absolutely nothing for decades and then suddenly lurch violently without warning. The seismologists keep saying it, and someday it will end up happening, but that could be tomorrow or it could be centuries from now.