What is the ability to have two opposite or contradictory thoughts at the same time, and accept both of them. People who practice this are able to tell lies and believe them or forget about facts that they don't need. They deny objective reality while they are aware of that same reality. midmix oppo-believe unfactknow Doublethink

The term you're referring to is "Doublethink." It is a concept in George Orwell's dystopian novel "1984" that describes the ability to hold two contradictory beliefs at the same time and accept both of them. People who practice doublethink can manipulate facts and reality to suit their needs, denying objective reality while being fully aware of it. This concept is often used to critique totalitarian regimes and the manipulation of truth in such systems.