TED-Ed: Jean-Baptiste P. Koehl: Why are earthquakes so hard to predict?

The video explores the history and challenges of earthquake prediction, starting with Zhang Hong's ancient device. It explains how tectonic plates cause earthquakes and the difficulties in predicting them due to various geological factors. Modern tools like seismometers, smartphones, and NASA's QuakeSim are discussed, along with the potential of radon-thoron detectors. The video concludes with the future possibilities of predicting and responding to earthquakes more effectively.

What new insight or understanding did you gain from this video?