IT is the bodiless telepathic brain that dominates the planet of Camazotz. IT controls all the people in Camazotz and makes people often do same things together in a mechanistic synchronicity as if they were robots. IT speaks through The Man With Red Eyes and later through Charles Wallace, and is functionally part of the interstellar cloud of evil called the Black Thing. IT is described as slightly larger than a human brain. Housed near the "CENTRAL Central Intelligence" building, IT is said to pulse and quiver on IT's dais. IT's aim is to enforce absolute conformity on Camazotz, with the claimed benefit of eliminating war, unhappiness and inefficiency. However, IT is aware of cruelty, referring to "ITself" as "the Happiest Sadist".
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