The configuration of the ocean-floor is of great interest to seismologists studying the movements of the Earth's crust. Oceanographers are also able to explain certain peculiarities of ocean currents by the contour of the ocean-bed. But enormous areas are still unexplored. Paul J. H. Schoemaker
The market can quickly seize up. Prices don't adjust in a smooth continuous fashion, but instead abruptly reconfigure themselves, like the earth's crust during an earthquake. David Orrell