Doublethink

[PussyCat]

[Newspeak] word, and the most important pillar of [Ingsoc]. Doublethink is the ability to hold two contradictory opinions at the same time without noticing the contradiction. It also refers to the mind trick to accept the changes to history made by the Party, and in accepting them, forgetting that the mind trick was ever performed, and then forgetting the forgetting, etc.

[Luis Fok]

To know and not to know, to be conscious of complete truthfulness while telling carefully constructed lies, to hold simultaneously two opinions which cancelled out, knowing them to be contradictory and believing in both of them, to use logic against logic, to [repudiate] morally while laying claim to it, to believe that democracy was impossible and that the Party was [the guardian] of democracy, to forget, whatever it was necessary to forget, then draw it back into memory again at the moment when it was needed, and then promptly to [forger] it again, and above all, to apply the same process to the process itself--that was the ultimate [subtlety]: consciously to induce unconsciousness, and then, once again, to become unconscious of the act of hypnosis you had just performed. Even to understand the word doublethink involved the use of doublethink.

[Sonia]

When one is forced to express that a lie is truth, despite his knowledge of the real facts. Orgininated [in the book] [1984] in the fictional Socialist government of [Ingsoc]

[Mark Zuckerberg]

When you see potentially creepy and [worrisome] reasons for someones words or actions. There are likely plenty of normal explanations, but the [creepiness] is stuck in your head and you might start to believe it.
You are more likely to [doublethink] if you are sad, depressed, or recently have experienced something highly disturbing.
Could be caused by a loss of trust in the honesty and innocence of the world, or maybe youre on drugs.

[Kai]

The acceptance of contrary opinions or beliefs at the same time, especially as a result of political indoctrination.