Truly unpredictable. Things we see as constant today could be gone tomorrow and there’s truly no way of predicting what may come along to cause that.

My grandmother once told me about a newspaper headline from the New York Times. It said that Manhattan would be buried in horse manure very soon unless the borough underwent a massive infrastructure overhaul in order to facilitate prompt removal of tonnage of dookie off the streets. Heated debates sprung up as some suggested large sewage troughs beneath...