Good drills are always essential, even when they’re (fortunately) not needed. With every skill I’ve acquired over the years (free-fall parachuting, SCUBA, etc) I’ve relentlessly practiced for the many things that can go wrong. As they say with firearms training: “experts practice to recover automatically from problems, amateurs practice to hit a paper target.” I’ve never understood how tourists can blithely go diving at a resort without even having taken the basic PADI Open Water certification. Apparently if you don’t know about bad stuff, it never happens to you…. (sigh).

Anyone who enjoys my articles here on Medium may be interested in my books Why Democracy Failed and The Praying Ape, both available from Amazon.