a variety of truths (just pick one that works)

Truth is malleable as there is no real objective truth. So leaders and even everyday people  can just pick one that works, depending on our intentions. Leaders can fabricate truth by propoganda, scare tactics, like in 1984 the party used propoganda like the big brother brother posters annd eventually tortured Winston to believe 2+2=5 and to love the party. But this difficult to maintain, so these authoriatarian leaders have to keep forieng ideas from conflicting with this truth and they often exploit the youth (like the junior spies in 1984, hitlers nazi youth, and mao tse tongs red guards) to help maintain their truth their power. That control of truth is a little extreme so most politicians control the perceived truth through language. They might downplay something horrific using that political language. They call children who fled their home and families to escape the jaws of war, displaced peoples or something. Scientists use whatever truth can be backed up by rationality, truth that they can argue so they run tests gather evidence for their idea and even when their idea gains credibility it still is just a theory not an objective truth. Everyday people can sort of craft their own truth but its usually just the practical truth the one that would suit their lifestyle their society often its just the truth their told. Like in the world of small children who celebrate Christmas, there is the truth that santa claus exhists because their parents tell them he does, every Christmas they find presents that magically appear under the tree and find and empty plate and glass which were previously filled with milk and cookies .  There are exceptions of course but a majority of people are convinced of the ideals and truths of their society.