Editing Thetan (section)

== History and cosmology ==

[[Jon Atack]], whose book ''[[A Piece of Blue Sky]]'' details how he reached [[Operating Thetan]] level V before leaving Scientology, describes Hubbard's doctrines about thetans: "Thetans are all-knowing beings, and became bored because there were no surprises. Hubbard asserted that the single most important desire in all beings is to have a 'game'. To have a 'game' it was necessary to 'not know' certain things, so certain perceptions were negated ('not-is-ed')." Since thetans knew everything, this required them to abandon or suppress perceptions and knowledge. Over time, the loss of perception accumulated and certain thetans began to cause harm to others. MEST (physical) beings also sought to "trap" thetans in order to control them. Thetans came to learn contrition, punishing themselves for their own "harmful" acts.{{r|urban|p=70}}{{r|atack|p=381}}

According to Hubbard, an essential part of the thetans' game was the "conquest" of matter, energy, space, and time by the life force, theta. This has produced multiple universes which have ended and begun in succession, each new one being more solid and entrapping than the last. The thetans have by now become so enmeshed in the physical universe that many have identified themselves totally with it, forgetting "their quadrillions{{Efn|Thousands of billions in [[Long and short scales|Long Scale]]}} of years of existence and their original godly powers, barely capable of even leaving their bodies at will".{{r|atack|p=381}}

According to Scientology, thetan powers are said to remain potent and restorable. One of the Church of Scientology's stated goals is "the rehabilitation of the human spirit", by which it means the restoration of the thetan's original abilities. Hubbard claims that thetans are able to change reality through "postulates"—decisions made by the individual about the nature of the reality around them. Some thetans are said to have (mis)used this ability to "implant" others with hypnotic suggestions, forcing other thetans to "cluster" around bodies (hence [[body thetan]]s). This sort of directed control is referred to as "other-determinism". Scientology seeks to undo it and return the thetan to "self-determinism", where he can control himself and his environment. The eventual goal is to achieve "pan-determinism", where he acts for the good of all.