I’m sitting writing this blog on a sun-drenched chalet balcony in Switzerland. We’ve been here for the past week, deep in the Bernese Oberland and surrounded by some of the most spectacular mountains in Europe. There’s not a cloud in the sky today, but yesterday thick mist covered the valley and fresh snow fell on the peaks. Being hardy, determined types, we went out walking regardless. As we hiked through a forest where visibility had been reduced to a matter of feet, I was reminded exactly...