It is just a few months short of the 20th anniversary of Loma Prieta earthquake: “a major earthquake that struck the San Francisco Bay Area of California on October 17, 1989 at 5:04 p.m. local time. Caused by a slip along the San Andreas Fault, the earthquake lasted approximately 15 seconds and measured 6.9 on the moment magnitude scale.” [Wiki] I will always remember the exact moment it happened. I was at a trade show at the San Jose convention center, and everything started to shake and things came crashing …