Having arrived earlier this afternoon in Hawaii (or, more specifically, on the southwest coast of Maui), I’ve by now had chance to reconfirm at least one highly functional life skill – within seconds of entering, I can consistently and precisely estimate a hot tub’s temperature, to the exact degree. Impressive, sure, but that’s just the sort of ability you can hone if you’re willing to subject yourself to the hard work of years and years of vacationing on tropical islands across the globe.