Insulation — the archaic definition of this word means to literally “make an island.” Insulation was a defensive technique that cities or castles used to keep enemies out, whereby they dug trenches to cut easy access off from others. The term has come to mean in the last century to keep warmth in, but it has not always been so. It is key to grasp that a leader who becomes insulated, creates a massive obstacle for their followers and ultimately their own ability to influence, communicate, and promote growth.
Therefore, if isolation is withdrawal, then insulation is the construction of barriers or obstacles that signify a full-blown retreat. Insulation is a by-product of isolation. It is, literally, entrenchment. Entrenched obstacles are permanent, lasting and more difficult to overcome.
