Template:Are You Sure/April 18

• ... that the 1906 San Francisco earthquake struck the coast of Northern California at 5:12 a.m. on April 18 with an estimated moment magnitude of 7.9; that devastating fires soon broke out in the city and lasted for several days; and that as a result, up to 3,000 people died and over 80% of the city of San Francisco was destroyed?

• ... that the Bathysquare is a two-dimensional bathysphere with sufficient artificial intelligence to escape captivity and hide from its designer, and that its location is currently unknown?