Bubble of Expertise

Several years ago in a previous life, I was the commander of a military base. It was a fairly large installation responsible for sensitive missions and hardware. Our chief of security was named George. George had been a specialist for some time and was very good at what he did. He was totally focused on the security of the base. He would have been very happy if we had locked down the entire perimeter and patrolled it with dogs and armed guards. George was so focused that he lived within a bubble that excluded all considerations other than security. I had to explain to George on more than one o...