Imagine a tree, small, covered with thorns. It is growing next to your house. At first it is small, but as it begins to grow, its roots dig deep into the soil. As the tendrils reach deeper, they begin to invade your home. They stretch into tiny crack in the foundation, wrap around plumbing systems and hamper buried electrical systems. This tree, originally small and unobtrusive, now threatens the entire foundation and well-being of your home. It is pervasive entangling, a continual and detrimental interweaving of two systems. Now hold that thought.