Yesterday (June 17) was the 62nd anniversary of the collapse of the then-under-construction Second Narrows bridge in Vancouver in 1958 , which killed 18 Ironworkers (a 19th victim was a diver seeking to recover bodies afterwards) and was an event I heard while playing outside my home in West Vancouver many miles away; I was only nine years old at the time and it was my first exposure to human-caused mass disasters but unfortunately it was not the last. Eventually we learned the bridge collapse happened because a design engineer had underestimated the load-bearing capacity of a steel spar from which a crane was placing beams to connect the north and south sides of the major construction project, which was eventually completed and is now called the Ironworkers Memorial Bridge . Since then I have become somewhat inured to such mass disasters, as have many people nowadays, because there seem to have been so many of them, notably the 9/11 attack on the Twin Towers, li...