A system is in equilibrium when the forces constituting it are arranged in such a way as to compensate each other, like the two weights pulling at the arms of a pair of scales. ↗
For four years, I listened to stories of intelligence failures, and it wasn't due to incompetence of anyone in the system, but that the system is so arcane. ↗
We are fortunate to have some of the greatest and best teachers in the world, but we want to make sure that those few that try to sneak through the system are caught in advance. ↗